Who was the first to create atomic weapons? The creators of the atomic bomb - who are they?
Nuclear weapons are weapons of mass destruction with explosive action, based on the use of fission energy of heavy nuclei of some isotopes of uranium and plutonium, or in thermonuclear reactions of synthesis of light nuclei of hydrogen isotopes of deuterium and tritium, into heavier ones, for example, nuclei of helium isotopes.
Warheads of missiles and torpedoes, aircraft and depth charges, artillery shells and mines can be equipped with nuclear charges. Based on their power, nuclear weapons are divided into ultra-small (less than 1 kt), small (1-10 kt), medium (10-100 kt), large (100-1000 kt) and super-large (more than 1000 kt). Depending on the tasks being solved, it is possible to use nuclear weapons in the form of underground, ground, air, underwater and surface explosions. The characteristics of the destructive effect of nuclear weapons on the population are determined not only by the power of the ammunition and the type of explosion, but also by the type of nuclear device. Depending on the charge, they are distinguished: atomic weapons, which are based on the fission reaction; thermonuclear weapons - when using a fusion reaction; combined charges; neutron weapons.
The only fissile substance found in nature in appreciable quantities is the isotope of uranium with a nuclear mass of 235 atomic mass units (uranium-235). The content of this isotope in natural uranium is only 0.7%. The remainder is uranium-238. Since the chemical properties of the isotopes are exactly the same, separating uranium-235 from natural uranium requires a rather complex process of isotope separation. The result can be highly enriched uranium containing about 94% uranium-235, which is suitable for use in nuclear weapons.
Fissile substances can be produced artificially, and the least difficult from a practical point of view is the production of plutonium-239, which is formed as a result of the capture of a neutron by a uranium-238 nucleus (and the subsequent chain of radioactive decays of intermediate nuclei). A similar process can be carried out in a nuclear reactor operating on natural or slightly enriched uranium. In the future, plutonium can be separated from spent reactor fuel in the process of chemical reprocessing of the fuel, which is noticeably simpler than the isotope separation process carried out when producing weapons-grade uranium.
To create nuclear explosive devices, other fissile substances can be used, for example, uranium-233, obtained by irradiation of thorium-232 in a nuclear reactor. However, only uranium-235 and plutonium-239 have found practical use, primarily due to the relative ease of obtaining these materials.
The possibility of practical use of the energy released during nuclear fission is due to the fact that the fission reaction can have a chain, self-sustaining nature. Each fission event produces approximately two secondary neutrons, which, when captured by the nuclei of the fissile material, can cause them to fission, which in turn leads to the formation of even more neutrons. When special conditions are created, the number of neutrons, and therefore fission events, increases from generation to generation.
The first nuclear explosive device was detonated by the United States on July 16, 1945 in Alamogordo, New Mexico. The device was a plutonium bomb that used a directed explosion to create criticality. The power of the explosion was about 20 kt. In the USSR, the first nuclear explosive device similar to the American one exploded on August 29, 1949.
The history of the creation of nuclear weapons.
In early 1939, the French physicist Frédéric Joliot-Curie concluded that a chain reaction was possible that would lead to an explosion of monstrous destructive force and that uranium could become a source of energy as an ordinary explosive. This conclusion became the impetus for developments in the creation of nuclear weapons. Europe was on the eve of the Second World War, and the potential possession of such powerful weapons gave any owner enormous advantages. Physicists from Germany, England, the USA, and Japan worked on the creation of atomic weapons.
By the summer of 1945, the Americans managed to assemble two atomic bombs, called “Baby” and “Fat Man”. The first bomb weighed 2,722 kg and was filled with enriched Uranium-235.
The "Fat Man" bomb with a charge of Plutonium-239 with a power of more than 20 kt had a mass of 3175 kg.
US President G. Truman became the first political leader to decide to use nuclear bombs. The first targets for nuclear strikes were Japanese cities (Hiroshima, Nagasaki, Kokura, Niigata). WITH military point There was no need for such bombings of densely populated Japanese cities.
On the morning of August 6, 1945, there was a clear, cloudless sky over Hiroshima. As before, the approach of two American planes from the east (one of them was called Enola Gay) at an altitude of 10-13 km did not cause alarm (since they appeared in the sky of Hiroshima every day). One of the planes dived and dropped something, and then both planes turned and flew away. The dropped object slowly descended by parachute and suddenly exploded at an altitude of 600 m above the ground. It was the Baby bomb. On August 9, another bomb was dropped over the city of Nagasaki.
The total human losses and the scale of destruction from these bombings are characterized by the following figures: 300 thousand people died instantly from thermal radiation (temperature about 5000 degrees C) and the shock wave, another 200 thousand were injured, burned, and radiation sickness. On an area of 12 sq. km, all buildings were completely destroyed. In Hiroshima alone, out of 90 thousand buildings, 62 thousand were destroyed.
After the American atomic bombings, on August 20, 1945, by order of Stalin, a special committee on atomic energy was formed under the leadership of L. Beria. The committee included prominent scientists A.F. Ioffe, P.L. Kapitsa and I.V. Kurchatov. A communist by conviction, scientist Klaus Fuchs, a prominent employee of the American nuclear center in Los Alamos, provided a great service to Soviet nuclear scientists. During 1945-1947, he transmitted information on practical and theoretical issues of creating atomic and hydrogen bombs four times, which accelerated their appearance in the USSR.
In 1946 - 1948, the nuclear industry was created in the USSR. A test site was built in the area of Semipalatinsk. In August 1949, the first Soviet nuclear device was detonated there. Before this, US President Henry Truman was informed that the Soviet Union had mastered the secret of nuclear weapons, but the Soviet Union would not create a nuclear bomb until 1953. This message caused the US ruling circles to want to start a preventive war as quickly as possible. The Troyan plan was developed, which envisaged the start of hostilities at the beginning of 1950. At that time, the United States had 840 strategic bombers and over 300 atomic bombs.
The damaging factors of a nuclear explosion are: shock wave, light radiation, penetrating radiation, radioactive contamination and electromagnetic pulse.
Shock wave. The main damaging factor of a nuclear explosion. About 60% of the energy of a nuclear explosion is spent on it. It is an area of sharp air compression, spreading in all directions from the explosion site. The damaging effect of a shock wave is characterized by the magnitude of excess pressure. Excess pressure is the difference between the maximum pressure at the shock wave front and the normal atmospheric pressure ahead of it. It is measured in kilopascals - 1 kPa = 0.01 kgf/cm2.
With excess pressure of 20-40 kPa, unprotected people can get mild injuries. Exposure to a shock wave with an excess pressure of 40-60 kPa leads to moderate damage. Severe injuries occur when excess pressure exceeds 60 kPa and are characterized by severe contusions of the entire body, fractures of the limbs, and ruptures of internal parenchymal organs. Extremely severe injuries, often fatal, are observed at excess pressure above 100 kPa.
Light radiation is a stream of radiant energy, including visible ultraviolet and infrared rays.
Its source is a luminous area formed by the hot products of the explosion. Light radiation spreads almost instantly and lasts, depending on the power of the nuclear explosion, up to 20 s. Its strength is such that, despite its short duration, it can cause fires, deep skin burns and damage to the organs of vision in people.
Light radiation does not penetrate through opaque materials, so any barrier that can create a shadow protects against the direct action of light radiation and prevents burns.
Light radiation is significantly weakened in dusty (smoky) air, fog, and rain.
Penetrating radiation.
This is a stream of gamma radiation and neutrons. The impact lasts 10-15 s. The primary effect of radiation is realized in physical, physicochemical and chemical processes with the formation of chemically active free radicals (H, OH, HO2) with high oxidizing and reducing properties. Subsequently, various peroxide compounds are formed, inhibiting the activity of some enzymes and increasing others, which play an important role in the processes of autolysis (self-dissolution) of body tissues. The appearance in the blood of decay products of radiosensitive tissues and pathological metabolism when exposed to high doses of ionizing radiation is the basis for the formation of toxemia - poisoning of the body associated with the circulation of toxins in the blood. Of primary importance in the development of radiation injuries are disturbances in the physiological regeneration of cells and tissues, as well as changes in the functions of regulatory systems.
Radioactive contamination of the area
Its main sources are nuclear fission products and radioactive isotopes formed as a result of the acquisition of radioactive properties by the elements from which nuclear weapons are made and those that make up the soil. A radioactive cloud is formed from them. It rises to a height of many kilometers and is transported with air masses over considerable distances. Radioactive particles falling from the cloud to the ground form a zone of radioactive contamination (trace), the length of which can reach several hundred kilometers. Radioactive substances pose the greatest danger in the first hours after deposition, since their activity is highest during this period.
Electromagnetic pulse .
This is a short-term electromagnetic field that occurs during the explosion of a nuclear weapon as a result of the interaction of gamma radiation and neutrons emitted during a nuclear explosion with atoms of the environment. The consequence of its impact is burnout or breakdown of individual elements of radio-electronic and electrical equipment. People can only be harmed if they come into contact with wire lines at the time of the explosion.
A type of nuclear weapon is neutron and thermonuclear weapons.
Neutron weapons are small-sized thermonuclear ammunition with a power of up to 10 kt, designed primarily to destroy enemy personnel through the action of neutron radiation. Neutron weapons are classified as tactical nuclear weapons.
Attracted specialists from many countries. Scientists and engineers from the USA, USSR, England, Germany and Japan worked on these developments. The Americans were especially active in this area, having the best technological base and raw materials, and also managing to attract the strongest intellectual resources of those times to research.
The United States government has set a task for physicists to create, in an extremely short time, a new type of weapon that could be delivered to the most remote point of the planet.
Los Alamos, located in the deserted desert of New Mexico, became the center of American nuclear research. Many scientists, designers, engineers and military personnel worked on the top-secret military project, and all the work was led by the experienced theoretical physicist Robert Oppenheimer, who is most often called the “father” of atomic weapons. Under his leadership, the best specialists from all over the world developed controlled technology, without interrupting the search process for a minute.
By the fall of 1944, activities to create the first nuclear power plant in history general outline have come to an end. By this time, a special aviation regiment had already been formed in the United States, which was to carry out the tasks of delivering lethal weapons to the places where they would be used. The regiment's pilots underwent special training, performing training flights at different altitudes and in conditions close to combat ones.
First atomic bombings
In mid-1945, US designers managed to assemble two nuclear devices ready for use. The first targets for attack were also selected. Japan was a strategic enemy of the United States at that time.
The American leadership decided to launch the first atomic strikes on two Japanese cities in order to intimidate not only Japan, but also other countries, including the USSR, with this action.
On August 6th and 9th, 1945, American bombers dropped the first atomic bombs in history on the unsuspecting inhabitants of the Japanese cities of Hiroshima and Nagasaki. As a result, more than one hundred thousand people died from thermal radiation and shock waves. These were the consequences of the use of unprecedented weapons. The world has entered a new phase of its development.
However, the US monopoly on the military use of the atom did not last too long. The Soviet Union also intensively searched for ways to practically implement the principles underlying nuclear weapons. The work of the team of Soviet scientists and inventors was headed by Igor Kurchatov. In August 1949, tests of the Soviet atomic bomb, which received the working name RDS-1. The fragile military balance in the world was restored.
Third Reich Victoria Viktorovna Bulavina
Who invented the nuclear bomb?
Who invented the nuclear bomb?
The Nazi Party has always recognized great importance technology and invested huge amounts of money in the development of missiles, aircraft and tanks. But the most outstanding and dangerous discovery was made in the field of nuclear physics. Germany was perhaps the leader in nuclear physics in the 1930s. However, with the Nazis coming to power, many German physicists who were Jews left the Third Reich. Some of them emigrated to the United States, bringing with them disturbing news: Germany may be working on an atomic bomb. This news prompted the Pentagon to take steps to develop its own atomic program, which was called the Manhattan Project...
An interesting, but more than dubious version of the “secret weapon of the Third Reich” was proposed by Hans Ulrich von Kranz. His book “The Secret Weapons of the Third Reich” puts forward the version that the atomic bomb was created in Germany and that the United States only imitated the results of the Manhattan Project. But let's talk about this in more detail.
Otto Hahn, the famous German physicist and radiochemist, together with another prominent scientist Fritz Straussmann, discovered the fission of the uranium nucleus in 1938, essentially giving rise to work on the creation of nuclear weapons. In 1938, atomic developments were not classified, but in virtually no country except Germany, they were not given due attention. They didn't see much point. British Prime Minister Neville Chamberlain argued: “This abstract matter has nothing to do with state needs.” Professor Hahn assessed the state of nuclear research in the United States of America as follows: “If we talk about a country in which the least attention is paid to nuclear fission processes, then we should undoubtedly name the United States. Of course, I'm not considering Brazil or the Vatican right now. However, among developed countries, even Italy and communist Russia are significantly ahead of the United States.” He also noted that little attention is paid to the problems of theoretical physics on the other side of the ocean; priority is given to applied developments that can provide immediate profit. Hahn's verdict was unequivocal: "I can say with confidence that within the next decade the North Americans will not be able to do anything significant for the development of atomic physics." This statement served as the basis for constructing the von Kranz hypothesis. Let's consider his version.
At the same time, the Alsos group was created, whose activities boiled down to “headhunting” and searching for the secrets of German atomic research. A logical question arises here: why should Americans look for other people’s secrets if their own project is in full swing? Why did they rely so much on other people's research?
In the spring of 1945, thanks to the activities of Alsos, many scientists who took part in German nuclear research fell into the hands of the Americans. By May they had Heisenberg, Hahn, Osenberg, Diebner, and many other outstanding German physicists. But the Alsos group continued active searches in already defeated Germany - until the very end of May. And only when all the major scientists were sent to America, Alsos ceased its activities. And at the end of June, the Americans test an atomic bomb, allegedly for the first time in the world. And at the beginning of August two bombs are dropped on Japanese cities. Hans Ulrich von Kranz noticed these coincidences.
The researcher also has doubts because only a month passed between the testing and combat use of the new superweapon, since manufacturing a nuclear bomb is impossible in such a short time! After Hiroshima and Nagasaki, the next US bombs did not enter service until 1947, preceded by additional tests at El Paso in 1946. This suggests that we are dealing with a carefully hidden truth, since it turns out that in 1945 the Americans dropped three bombs - and all were successful. The next tests - of the same bombs - take place a year and a half later, and not very successfully (three out of four bombs did not explode). Serial production began another six months later, and it is unknown to what extent the atomic bombs that appeared in American army warehouses corresponded to their terrible purpose. This led the researcher to the idea that “the first three atomic bombs - the same ones from 1945 - were not built by the Americans on their own, but received from someone. To put it bluntly - from the Germans. This hypothesis is indirectly confirmed by the reaction of German scientists to the bombing of Japanese cities, which we know about thanks to David Irving’s book.” According to the researcher, the atomic project of the Third Reich was controlled by the Ahnenerbe, which was under the personal subordination of SS leader Heinrich Himmler. According to Hans Ulrich von Kranz, “a nuclear charge is the best instrument of post-war genocide, both Hitler and Himmler believed.” According to the researcher, on March 3, 1944, an atomic bomb (Object “Loki”) was delivered to the test site - in the swampy forests of Belarus. The tests were successful and aroused unprecedented enthusiasm among the leadership of the Third Reich. German propaganda had previously mentioned a “miracle weapon” of gigantic destructive power that the Wehrmacht would soon receive, but now these motives sounded even louder. They are usually considered a bluff, but can we definitely draw such a conclusion? As a rule, Nazi propaganda did not bluff, it only embellished reality. It has not yet been possible to convict her of a major lie on the issue of “miracle weapons.” Let us remember that propaganda promised jet fighters - the fastest in the world. And already at the end of 1944, hundreds of Messerschmitt-262s patrolled the airspace of the Reich. Propaganda promised a rain of missiles for the enemies, and since the autumn of that year, dozens of V-cruise missiles rained down on English cities every day. So why on earth should the promised super-destructive weapon be considered a bluff?
In the spring of 1944, feverish preparations began for the serial production of nuclear weapons. But why weren't these bombs used? Von Kranz gives this answer - there was no carrier, and when the Junkers-390 transport plane appeared, betrayal awaited the Reich, and besides, these bombs could no longer decide the outcome of the war...
How plausible is this version? Were the Germans really the first to develop the atomic bomb? It’s difficult to say, but this possibility should not be ruled out, because, as we know, it was German specialists who were leaders in atomic research back in the early 1940s.
Despite the fact that many historians are engaged in researching the secrets of the Third Reich, because many secret documents have become available, it seems that even today the archives with materials about German military developments reliably store many mysteries.
author From the book The Newest Book of Facts. Volume 3 [Physics, chemistry and technology. History and archaeology. Miscellaneous] author Kondrashov Anatoly Pavlovich From the book The Newest Book of Facts. Volume 3 [Physics, chemistry and technology. History and archaeology. Miscellaneous] author Kondrashov Anatoly Pavlovich From the book The Newest Book of Facts. Volume 3 [Physics, chemistry and technology. History and archaeology. Miscellaneous] author Kondrashov Anatoly Pavlovich From the book The Newest Book of Facts. Volume 3 [Physics, chemistry and technology. History and archaeology. Miscellaneous] author Kondrashov Anatoly Pavlovich From the book 100 Great Mysteries of the 20th Century authorSO WHO INVENTED THE MORTAR? (Material by M. Chekurov) The Great Soviet Encyclopedia, 2nd edition (1954) states that “the idea of creating a mortar was successfully implemented by midshipman S.N. Vlasyev, an active participant in the defense of Port Arthur.” However, in an article on the mortar, the same source
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American Robert Oppenheimer and Soviet scientist Igor Kurchatov are officially recognized as the fathers of the atomic bomb. But in parallel, deadly weapons were also being developed in other countries (Italy, Denmark, Hungary), so the discovery rightfully belongs to everyone.
The first to tackle this issue were German physicists Fritz Strassmann and Otto Hahn, who in December 1938 were the first to artificially split the atomic nucleus of uranium. And six months later, the first reactor was already being built at the Kummersdorf test site near Berlin and uranium ore was urgently purchased from the Congo.
“Uranium Project” - the Germans start and lose
In September 1939, the “Uranium Project” was classified. 22 reputable research centers were invited to participate in the program, and the research was supervised by Minister of Armaments Albert Speer. The construction of an installation for separating isotopes and the production of uranium to extract the isotope from it that supports the chain reaction was entrusted to the IG Farbenindustry concern.
For two years, a group of the venerable scientist Heisenberg studied the possibility of creating a reactor with heavy water. A potential explosive (uranium-235 isotope) could be isolated from uranium ore.
But an inhibitor is needed to slow down the reaction - graphite or heavy water. Choosing the latter option created an insurmountable problem.
The only plant for the production of heavy water, which was located in Norway, was disabled by local resistance fighters after the occupation, and small reserves of valuable raw materials were exported to France.
The rapid implementation of the nuclear program was also hindered by the explosion of an experimental nuclear reactor in Leipzig.
Hitler supported the uranium project as long as he hoped to obtain a super-powerful weapon that could influence the outcome of the war he started. After government funding was cut, the work programs continued for some time.
In 1944, Heisenberg managed to create cast uranium plates, and a special bunker was built for the reactor plant in Berlin.
It was planned to complete the experiment to achieve a chain reaction in January 1945, but a month later the equipment was urgently transported to the Swiss border, where it was deployed only a month later. The nuclear reactor contained 664 cubes of uranium weighing 1525 kg. It was surrounded by a graphite neutron reflector weighing 10 tons, and one and a half tons of heavy water were additionally loaded into the core.
On March 23, the reactor finally started working, but the report to Berlin was premature: the reactor did not reach a critical point, and the chain reaction did not occur. Additional calculations showed that the mass of uranium must be increased by at least 750 kg, proportionally adding the amount of heavy water.
But supplies of strategic raw materials were at their limit, as was the fate of the Third Reich. On April 23, the Americans entered the village of Haigerloch, where the tests were carried out. The military dismantled the reactor and transported it to the United States.
The first atomic bombs in the USA
A little later, the Germans began developing the atomic bomb in the USA and Great Britain. It all started with a letter from Albert Einstein and his co-authors, emigrant physicists, sent in September 1939 to US President Franklin Roosevelt.
The appeal emphasized that Nazi Germany was close to creating an atomic bomb.
Stalin first learned about work on nuclear weapons (both allied and adversary) from intelligence officers in 1943. They immediately decided to create a similar project in the USSR. Instructions were issued not only to scientists, but also to intelligence services, for which obtaining any information about nuclear secrets became a major task.
The invaluable information about the developments of American scientists that Soviet intelligence officers were able to obtain significantly advanced the domestic nuclear project. It helped our scientists avoid ineffective search paths and significantly speed up the time frame for achieving the final goal.
Serov Ivan Aleksandrovich - head of the bomb creation operation
Of course, the Soviet government could not ignore the successes of German nuclear physicists. After the war, a group of Soviet physicists, future academicians, were sent to Germany in the uniform of colonels of the Soviet army.
Ivan Serov, the first deputy people's commissar of internal affairs, was appointed head of the operation, this allowed scientists to open any doors.
In addition to their German colleagues, they found reserves of uranium metal. This, according to Kurchatov, shortened the development time of the Soviet bomb by at least a year. More than one ton of uranium and leading nuclear specialists were taken out of Germany by the American military.
Not only chemists and physicists were sent to the USSR, but also qualified labor - mechanics, electricians, glassblowers. Some of the employees were found in prison camps. In total, about 1,000 German specialists worked on the Soviet nuclear project.
German scientists and laboratories on the territory of the USSR in the post-war years
A uranium centrifuge and other equipment, as well as documents and reagents from the von Ardenne laboratory and the Kaiser Institute of Physics were transported from Berlin. As part of the program, laboratories “A”, “B”, “C”, “D” were created, headed by German scientists.
The head of Laboratory “A” was Baron Manfred von Ardenne, who developed a method for gas diffusion purification and separation of uranium isotopes in a centrifuge.
For the creation of such a centrifuge (only on an industrial scale) in 1947 he received the Stalin Prize. At that time, the laboratory was located in Moscow, on the site of the famous Kurchatov Institute. Each German scientist’s team included 5-6 Soviet specialists.
Later, laboratory “A” was taken to Sukhumi, where a physical and technical institute was created on its basis. In 1953, Baron von Ardenne became a Stalin laureate for the second time.
Laboratory B, which conducted experiments in the field of radiation chemistry in the Urals, was headed by Nikolaus Riehl, a key figure in the project. There, in Snezhinsk, the talented Russian geneticist Timofeev-Resovsky, with whom he had been friends back in Germany, worked with him. The successful test of the atomic bomb brought Riehl the star of Hero of Socialist Labor and the Stalin Prize.
Research at Laboratory B in Obninsk was led by Professor Rudolf Pose, a pioneer in the field of nuclear testing. His team managed to create fast neutron reactors, the first nuclear power plant in the USSR, and projects for reactors for submarines.
On the basis of the laboratory, the Physics and Energy Institute named after A.I. was later created. Leypunsky. Until 1957, the professor worked in Sukhumi, then in Dubna, at the Joint Institute of Nuclear Technologies.
Laboratory “G”, located in the Sukhumi sanatorium “Agudzery”, was headed by Gustav Hertz. The nephew of the famous 19th century scientist gained fame after a series of experiments that confirmed the ideas of quantum mechanics and the theory of Niels Bohr.
The results of his productive work in Sukhumi were used to create an industrial installation in Novouralsk, where in 1949 the first Soviet bomb RDS-1 was filled.
The uranium bomb that the Americans dropped on Hiroshima was a cannon type. When creating the RDS-1, domestic nuclear physicists were guided by the Fat Boy - the “Nagasaki bomb”, made of plutonium according to the implosive principle.
In 1951, Hertz was awarded the Stalin Prize for his fruitful work.
German engineers and scientists lived in comfortable houses; they brought their families, furniture, paintings from Germany, they were provided with decent salaries and special food. Did they have the status of prisoners? According to Academician A.P. Aleksandrov, an active participant in the project, they were all prisoners in such conditions.
Having received permission to return to their homeland, the German specialists signed a non-disclosure agreement about their participation in the Soviet nuclear project for 25 years. In the GDR they continued to work in their specialty. Baron von Ardenne was a two-time winner of the German National Prize.
The professor headed the Physics Institute in Dresden, which was created under the auspices of the Scientific Council for the Peaceful Applications of Atomic Energy. The Scientific Council was headed by Gustav Hertz, who received the National Prize of the GDR for his three-volume textbook on atomic physics. Here, in Dresden, at the Technical University, Professor Rudolf Pose also worked.
The participation of German specialists in the Soviet atomic project, as well as the achievements of Soviet intelligence, do not diminish the merits of Soviet scientists who, with their heroic work, created domestic atomic weapons. And yet, without the contribution of each participant in the project, the creation of the nuclear industry and the nuclear bomb would have taken an indefinite period.
The investigation took place in April-May 1954 in Washington and was called, in the American manner, “hearings.”
Physicists (with capital letters!), but for the scientific world of America the conflict was unprecedented: not a dispute about priority, not the behind-the-scenes struggle of scientific schools, and not even the traditional confrontation between a forward-looking genius and a crowd of mediocre envious people. The key word in the proceedings was “loyalty.” The accusation of “disloyalty,” which acquired a negative, menacing meaning, entailed punishment: deprivation of access to top-secret work. The action took place at the Atomic Energy Commission (AEC). Main characters:
Robert Oppenheimer
, a native of New York, pioneer of quantum physics in the USA, scientific director of the Manhattan Project, “father of the atomic bomb”, successful scientific manager and refined intellectual, after 1945 a national hero of America...“I am not the simplest person,” American physicist Isidor Isaac Rabi once remarked. “But compared to Oppenheimer, I am very, very simple.” Robert Oppenheimer was one of the central figures of the twentieth century, whose very “complexity” absorbed the political and ethical contradictions of the country.
During World War II, the brilliant physicist Azulius Robert Oppenheimer led the development of American nuclear scientists to create the first atomic bomb in human history. The scientist led a solitary and secluded lifestyle, and this gave rise to suspicions of treason.
Atomic weapons are the result of all previous developments of science and technology. Discoveries that are directly related to its occurrence were made in late XIX V. The research of A. Becquerel, Pierre Curie and Marie Sklodowska-Curie, E. Rutherford and others played a huge role in revealing the secrets of the atom.
At the beginning of 1939, the French physicist Joliot-Curie concluded that a chain reaction was possible that would lead to an explosion of monstrous destructive force and that uranium could become a source of energy, like an ordinary explosive. This conclusion became the impetus for developments in the creation of nuclear weapons.
Europe was on the eve of World War II, and the potential possession of such a powerful weapon pushed militaristic circles to quickly create it, but the problem of having a large amount of uranium ore for large-scale research was a brake. Physicists from Germany, England, the USA, and Japan worked on the creation of atomic weapons, realizing that without a sufficient amount of uranium ore it was impossible to carry out work, the USA in September 1940 purchased a large amount of the required ore using false documents from Belgium, which allowed them to work on the creation nuclear weapons are in full swing.
From 1939 to 1945, more than two billion dollars were spent on the Manhattan Project. A huge uranium purification plant was built in Oak Ridge, Tennessee. H.C. Urey and Ernest O. Lawrence (inventor of the cyclotron) proposed a purification method based on the principle of gas diffusion followed by magnetic separation of the two isotopes. A gas centrifuge separated the light Uranium-235 from the heavier Uranium-238.
On the territory of the United States, in Los Alamos, in the desert expanses of New Mexico, an American nuclear center was created in 1942. Many scientists worked on the project, but the main one was Robert Oppenheimer. Under his leadership, the best minds of that time were gathered not only in the USA and England, but practically throughout Western Europe. A huge team worked on the creation of nuclear weapons, including 12 laureates Nobel Prize. Work in Los Alamos, where the laboratory was located, did not stop for a minute. In Europe, meanwhile, the Second World War was going on, and Germany carried out massive bombings of English cities, which endangered the English atomic project “Tub Alloys”, and England voluntarily transferred its developments and leading scientists of the project to the United States, which allowed the United States to take a leading position in the development of nuclear physics (creation of nuclear weapons).
“The Father of the Atomic Bomb,” he was at the same time an ardent opponent of American nuclear policy. Bearing the title of one of the most outstanding physicists of his time, he enjoyed studying the mysticism of ancient Indian books. Communist, traveler and staunch American patriot, very spiritual person, he was nevertheless willing to betray his friends in order to protect himself from attacks by anti-communists. The scientist who developed the plan to cause the greatest damage to Hiroshima and Nagasaki cursed himself for the “innocent blood on his hands.”
Writing about this controversial man is not an easy task, but it is an interesting one, and the twentieth century is marked by a number of books about him. However, the scientist’s rich life continues to attract biographers.
Oppenheimer was born in New York in 1903 into a family of wealthy and educated Jews. Oppenheimer was brought up in a love of painting, music, and in an atmosphere of intellectual curiosity. In 1922, he entered Harvard University and graduated with honors in just three years, his main subject being chemistry. Over the next few years, the precocious young man traveled to several European countries, where he worked with physicists who were studying the problems of studying atomic phenomena in the light of new theories. Just a year after graduating from university, Oppenheimer published scientific work, which showed how deeply he understands new methods. Soon he, together with the famous Max Born, developed the most important part of quantum theory, known as the Born-Oppenheimer method. In 1927, his outstanding doctoral dissertation brought him worldwide fame.
In 1928 he worked at the Universities of Zurich and Leiden. The same year he returned to the USA. From 1929 to 1947, Oppenheimer taught at the University of California and the California Institute of Technology. From 1939 to 1945, he actively participated in the work on creating an atomic bomb as part of the Manhattan Project; heading the Los Alamos laboratory specially created for this purpose.
In 1929, Oppenheimer, a rising scientific star, accepted offers from two of several universities vying for the right to invite him. He taught the spring semester at the vibrant, young California Institute of Technology in Pasadena, and the fall and winter semesters at the University of California, Berkeley, where he became the first professor of quantum mechanics. In fact, the polymath had to adjust for some time, gradually reducing the level of discussion to the capabilities of his students. In 1936, he fell in love with Jean Tatlock, a restless and moody young woman whose passionate idealism found outlet in communist activism. Like many thoughtful people of the time, Oppenheimer explored the ideas of the left as a possible alternative, although he did not join the Communist Party, as his younger brother, sister-in-law and many of his friends did. His interest in politics, like his ability to read Sanskrit, was a natural result of his constant pursuit of knowledge. By his own account, he was also deeply alarmed by the explosion of anti-Semitism in Nazi Germany and Spain and invested $1,000 a year from his $15,000 annual salary in projects related to the activities of communist groups. After meeting Kitty Harrison, who became his wife in 1940, Oppenheimer broke up with Jean Tatlock and moved away from her circle of left-wing friends.
In 1939, the United States learned that Hitler's Germany had discovered nuclear fission in preparation for global war. Oppenheimer and other scientists immediately realized that the German physicists would try to create a controlled chain reaction that could be the key to creating a weapon far more destructive than any that existed at that time. Enlisting the help of the great scientific genius, Albert Einstein, concerned scientists warned President Franklin D. Roosevelt of the danger in a famous letter. In authorizing funding for projects aimed at creating untested weapons, the president acted in strict secrecy. Ironically, many leading scientists worked together with American scientists in laboratories scattered throughout the country. world scientists forced to flee their homeland. One part of the university groups explored the possibility of creating a nuclear reactor, others took up the problem of separating uranium isotopes necessary to release energy in a chain reaction. Oppenheimer, who had previously been busy with theoretical problems, was offered to organize a wide range of work only at the beginning of 1942.
The US Army's atomic bomb program was codenamed Project Manhattan and was led by 46-year-old Colonel Leslie R. Groves, a career military officer. Groves, who characterized the scientists working on the atomic bomb as "an expensive bunch of nuts," however, acknowledged that Oppenheimer had a hitherto untapped ability to control his fellow debaters when the atmosphere became tense. The physicist proposed that all the scientists be brought together in one laboratory in the quiet provincial town of Los Alamos, New Mexico, in an area he knew well. By March 1943, the boarding school for boys had been turned into a strictly guarded secret center, with Oppenheimer becoming its scientific director. By insisting on the free exchange of information between scientists, who were strictly forbidden to leave the center, Oppenheimer created an atmosphere of trust and mutual respect, which contributed to the amazing success of his work. Without sparing himself, he remained the head of all areas of this complex project, although his personal life suffered greatly from this. But for a mixed group of scientists - among whom there were more than a dozen then or future Nobel laureates and of whom it was a rare person who did not have a pronounced individuality - Oppenheimer was an unusually dedicated leader and a subtle diplomat. Most of them would agree that the lion's share of the credit for the project's ultimate success belongs to him. By December 30, 1944, Groves, who had by then become a general, could say with confidence that the two billion dollars spent would produce a bomb ready for action by August 1 of the following year. But when Germany admitted defeat in May 1945, many of the researchers working at Los Alamos began to think about using new weapons. After all, Japan would probably have soon capitulated even without the atomic bombing. Should the United States become the first country in the world to use such a terrible device? Harry S. Truman, who became president after Roosevelt's death, appointed a committee to study possible consequences use of the atomic bomb, which included Oppenheimer. Experts decided to recommend dropping an atomic bomb without warning on a large Japanese military installation. Oppenheimer's consent was also obtained.
All these worries would, of course, be moot if the bomb had not gone off. The world's first atomic bomb was tested on July 16, 1945, approximately 80 kilometers from the air force base in Alamogordo, New Mexico. The device being tested, named "Fat Man" for its convex shape, was attached to a steel tower installed in a desert area. At exactly 5:30 a.m., a remote-controlled detonator detonated the bomb. With an echoing roar, a giant purple-green-orange fireball shot into the sky across an area 1.6 kilometers in diameter. The earth shook from the explosion, the tower disappeared. A white column of smoke quickly rose to the sky and began to gradually expand, taking on the terrifying shape of a mushroom at an altitude of about 11 kilometers. The first nuclear explosion shocked scientific and military observers near the test site and turned their heads. But Oppenheimer remembered the lines from the Indian epic poem "Bhagavad Gita": "I will become Death, the destroyer of worlds." Until the end of his life, satisfaction from scientific success was always mixed with a sense of responsibility for the consequences.
On the morning of August 6, 1945, there was a clear, cloudless sky over Hiroshima. As before, the approach of two American planes from the east (one of them was called Enola Gay) at an altitude of 10-13 km did not cause alarm (since they appeared in the sky of Hiroshima every day). One of the planes dived and dropped something, and then both planes turned and flew away. The dropped object slowly descended by parachute and suddenly exploded at an altitude of 600 m above the ground. It was the Baby bomb.
Three days after "Little Boy" was detonated in Hiroshima, a replica of the first "Fat Man" was dropped on the city of Nagasaki. On August 15, Japan, whose resolve was finally broken by these new weapons, signed an unconditional surrender. However, the voices of skeptics had already begun to be heard, and Oppenheimer himself predicted two months after Hiroshima that “mankind will curse the names Los Alamos and Hiroshima.”
The whole world was shocked by the explosions in Hiroshima and Nagasaki. Tellingly, Oppenheimer managed to combine his worries about testing a bomb on civilians and the joy that the weapon had finally been tested.
Nevertheless, the following year he accepted an appointment as chairman of the scientific council of the Atomic Energy Commission (AEC), thereby becoming the most influential adviser to the government and military on nuclear issues. While the West and the Stalin-led Soviet Union prepared in earnest for the Cold War, each side focused its attention on the arms race. Although many of the Manhattan Project scientists did not support the idea of creating a new weapon, former Oppenheimer collaborators Edward Teller and Ernest Lawrence believed that US national security required the rapid development of a hydrogen bomb. Oppenheimer was horrified. From his point of view, the two nuclear powers were already confronting each other, like “two scorpions in a jar, each capable of killing the other, but only at the risk of own life" With the proliferation of new weapons, wars would no longer have winners and losers - only victims. And the “father of the atomic bomb” made a public statement that he was against the development of the hydrogen bomb. Always uncomfortable with Oppenheimer and clearly jealous of his achievements, Teller began to make efforts to head the new project, implying that Oppenheimer should no longer be involved in the work. He told FBI investigators that his rival was using his authority to keep scientists from working on the hydrogen bomb, and revealed the secret that Oppenheimer suffered from bouts of severe depression in his youth. When President Truman agreed to fund the hydrogen bomb in 1950, Teller could celebrate victory.
In 1954, Oppenheimer's enemies launched a campaign to remove him from power, which they succeeded after a month-long search for "black spots" in his personal biography. As a result, a show case was organized in which many influential political and scientific figures spoke out against Oppenheimer. As Albert Einstein later put it: “Oppenheimer’s problem was that he loved a woman who didn’t love him: the US government.”
By allowing Oppenheimer's talent to flourish, America doomed him to destruction.
Oppenheimer is known not only as the creator of the American atomic bomb. He owns many works on quantum mechanics, relativity theory, physics elementary particles, theoretical astrophysics. In 1927 he developed the theory of interaction of free electrons with atoms. Together with Born, he created the theory of the structure of diatomic molecules. In 1931, he and P. Ehrenfest formulated a theorem, the application of which to the nitrogen nucleus showed that the proton-electron hypothesis of the structure of nuclei leads to a number of contradictions with the known properties of nitrogen. Investigated the internal conversion of g-rays. In 1937 he developed the cascade theory of cosmic showers, in 1938 he made the first calculation of a neutron star model, and in 1939 he predicted the existence of “black holes”.
Oppenheimer owns a number of popular books, including Science and the Common Understanding (1954), The Open Mind (1955), Some Reflections on Science and Culture (1960) . Oppenheimer died in Princeton on February 18, 1967.
Work on nuclear projects in the USSR and the USA began simultaneously. In August 1942, the secret “Laboratory No. 2” began working in one of the buildings in the courtyard of Kazan University. Igor Kurchatov was appointed its leader.
In Soviet times, it was argued that the USSR solved its atomic problem completely independently, and Kurchatov was considered the “father” of the domestic atomic bomb. Although there were rumors about some secrets stolen from the Americans. And only in the 90s, 50 years later, one of the main characters then, Yuli Khariton, spoke about the significant role of intelligence in accelerating the lagging Soviet project. And American scientific and technical results were obtained by Klaus Fuchs, who arrived in the English group.
Information from abroad helped the country's leadership make a difficult decision - to begin work on nuclear weapons during a difficult war. The reconnaissance allowed our physicists to save time and helped to avoid a “misfire” during the first atomic test, which had enormous political significance.
In 1939, a chain reaction of fission of uranium-235 nuclei was discovered, accompanied by the release of colossal energy. Soon after, articles on nuclear physics began to disappear from the pages of scientific journals. This could indicate the real prospect of creating an atomic explosive and weapons based on it.
After the discovery by Soviet physicists of the spontaneous fission of uranium-235 nuclei and the determination of the critical mass, a corresponding directive was sent to the residency on the initiative of the head of the scientific and technological revolution L. Kvasnikov.
In the Russian FSB (formerly the KGB of the USSR), 17 volumes of archival file No. 13676, which document who and how recruited US citizens to work for Soviet intelligence, are buried under the heading “keep forever.” Only a few of the top leadership of the USSR KGB had access to the materials of this case, the secrecy of which was only recently lifted. Soviet intelligence received the first information about the work on creating an American atomic bomb in the fall of 1941. And already in March 1942, extensive information about the research ongoing in the USA and England fell on I.V. Stalin’s desk. According to Yu. B. Khariton, in that dramatic period it was safer to use the bomb design already tested by the Americans for our first explosion. “Taking into account state interests, any other solution was then unacceptable. The merit of Fuchs and our other assistants abroad is undoubted. However, we implemented the American scheme during the first test not so much for technical, but for political reasons.
The message that the Soviet Union had mastered the secret of nuclear weapons caused the US ruling circles to want to start a preventive war as quickly as possible. The Troyan plan was developed, which envisaged the start of hostilities on January 1, 1950. At that time, the United States had 840 strategic bombers in combat units, 1,350 in reserve, and over 300 atomic bombs.
A test site was built in the area of Semipalatinsk. At exactly 7:00 a.m. on August 29, 1949, the first Soviet nuclear device, codenamed RDS-1, was detonated at this test site.
The Troyan plan, according to which atomic bombs were to be dropped on 70 cities of the USSR, was thwarted due to the threat of a retaliatory strike. The event that took place at the Semipalatinsk test site informed the world about the creation of nuclear weapons in the USSR.
Foreign intelligence not only attracted the attention of the country's leadership to the problem of creating atomic weapons in the West and thereby initiated similar work in our country. Thanks to foreign intelligence information, as recognized by academicians A. Aleksandrov, Yu. Khariton and others, I. Kurchatov did not make big mistakes, we managed to avoid dead-end directions in the creation of atomic weapons and create an atomic bomb in the USSR in a shorter time, in just three years , while the United States spent four years on this, spending five billion dollars on its creation.
As he noted in an interview with the Izvestia newspaper on December 8, 1992, the first Soviet atomic charge was manufactured according to the American model with the help of information received from K. Fuchs. According to the academician, when government awards were presented to participants in the Soviet atomic project, Stalin, satisfied that there was no American monopoly in this area, remarked: “If we had been one to a year and a half late, we would probably have tried this charge on ourselves.” ".
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