Race with the bomb (Second world war)

This article of synthesis treats events in Europe former to the era of the atom concretized by the Projet Manhattan.

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When the disorders of the the Thirties reach Europe on the political plans and social, the European scientific community reached the level of projections necessary to start the concrete phase of the Fission of the core of the Atome.

Work of chemists and physicists who marked first half of the 20th century, such Niels Bohr and the husbands Pierre and Marie Curie marks projections of importance.

The scientists function in a climate of emulation concerning their projections, which is the principle of a scientific community.

When the Second world war is declared, this question became the business of all: it was the race with the bomb.

Take care of the war

a first die in Germany east in place in Berlin at the time of the the Twenties in the “institute of chemistry of the emperor Guillaume II”, where Dye stick Meitner and Otto Hahn continues work of max Planck. Among them Walther Bothe was, which thereafter would set up the German Cyclotron. With the end of the year 1938, the principle of the chain reaction is finalized there by Friedrich Wilhelm Straßmann (see discovered nuclear fission )
Conscients at the same time of the range of their work and revealed dangerosity of the apparatus Nazi whose takeover becomes totalitarian, the brains are exiled. Otto Robert Frisch had already followed this way in 1933. Remain their work in Berlin the identification of the heavy Eau like component necessary to the tests.
the competitor project in France takes place with the beginning of the year 1939 in the buildings of the Collège de France, where Frederic Joliot and Irene Curie carries out a succeeded experiment.
the English program (Tube Alloys), on which works then Rudolf Peierls and Hans von Halban at Otto Frisch, had then remained on the theoretical level (results in 1940, but it is the war then).

During the war

The prospect for the hostilities puts an end to the climate emulation, replaced by a logic of National security on the plan of the implied States.

The only industrial treatment making it possible to synthesize heavy Eau at this time in Europe is located at Vemork in Norway, in the factory of Norsk Hydro (see heavy Eau). This detail does not fail to be added to the road of iron in decision making leading to the Campagne of Norway. Because once the declared war, the decisive strategic range of this work becomes a secondary field of confrontation between the belligerent powers of Europe.

the ministry for the French armament, elected to provide heavy water for the needs for the college of France, discovers that the Germans proposed the repurchase of the whole of water reserves door of Norsk Hydro, which attests of a reactivated project on their side. The French diplomacy alerts the Norwegian government of the potential military uses of this product, and proceeds to the Escamotage of stock via the island of Great Britain by the Secret services.

the French die is evacuated in April 1940 towards Cambridge, the heavy water stock including, just before the Percée of Sedan does not ruin the prospects for the interallied staff.

the British government founds the Commission MAUD to coordinate the efforts of the project Tube Alloys; during 1943, all is stopped and the useful elements are transferred in Nevada under the terms of the agreement from Quebec within the framework from the Projet Manhattan.

the Nazis start again a second die , by the means of two teams of scientists in the race with the bomb:

one probably directed by Werner Heisenberg, taking the succession at the Kaiser-Wilhelm Institute. This second team then côtoyait “scientific” colleagues whose work was marked by the infamy.
the other under the crook of Kurt Diebner (), coded Forschungsstelle E under the command of Karl Erich Schumann () project integrated into the S in 1944. Associated with engineers having worked out the Hollow-charge, their work directed by Dr. Walter Trinks concerned the Nucléosynthèse and aimed to the development of the first bends thermonuclear.

In June 1942, an accident occurs in Leipzig on an atomic pile with the test but not functional calculus. See Liste of the nuclear accidents
Neither one nor the other of these teams came to anything.

Conscious of the decisive character of these projects, aviation allied by four recoveries put an end to the production of heavy water in occupied Norway (to read Bataille of heavy water).

Exfiltration

Until the fall day before of the Nazi regime, the top-ranking executives and their supporters of the complex militaro-industrialist (such Hans Kammler, person in charge of the production of the missile V2 with Gilded) placed their creed in the result of these projects of explosive device for the fate of the war . It is important at that time to stress here the importance of the vehement speeches of Adolf Hitler: it frequently evoked " weapons of représailles" without other precise details, which gave rise to think of Allied which was in the secrecy of the Manhattan project which the Germans were close leading to the controlled nuclear reaction and which it was thus the atomic bomb that Hitler implied. It is significant that Heisenberg was surprised to discover after his capture by the Americans at which point the Allies were advanced in July 1945 whereas those on the other hand were surprised to learn the failures and delays from German science in this field.

The atomic scientists of the Nazi Germany were exfiltrés in England and passed to the consents ( ). After having consigned the result of their research, they came to enlarge the scientific quota of the Opération Paperclip.

The USSR put the hand on another part of these German dies in order to on the matter make up for its lost time after the explosion of Hiroshima.

Sensitized on the military use of the results of their field of experiment by the explosion of the bombs on Japan, the most important scientists having lived these episodes took part in pacifist Mouvements in the Après-guerre, in particular to preach non-proliferation.

See too

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