British contribution to the Manhattan Project

Scientists Rudolf Peierls and Otto Frisch calculated that the critical mass of a metallic sphere of pure uranium-235 was as little as 1 to 10 kilograms. The Frisch–Peierls memorandum prompted Britain to create an atomic bomb project. A British Mission led by Wallace Akers assisted in the development of gaseous diffusion technology in New York. Britain also produced the powdered nickel required by the gaseously diffusion process.

About British contribution to the Manhattan Project in brief

Britain contributed to the Manhattan Project by helping initiate the effort to build the first atomic bombs in the United States during World War II. Scientists Rudolf Peierls and Otto Frisch at the University of Birmingham calculated that the critical mass of a metallic sphere of pure uranium-235 was as little as 1 to 10 kilograms. The Frisch–Peierls memorandum prompted Britain to create an atomic bomb project, known as Tube Alloys. A British Mission led by Wallace Akers assisted in the development of gaseous diffusion technology in New York. Britain also produced the powdered nickel required by the gaseously diffusion process. Four members of the British Mission became group leaders at Los Alamos. William Penney observed the bombing of Nagasaki and participated in the Operation Crossroads nuclear tests in 1946. Britain then proceeded with High Explosive Research, its own nuclear weapons programme, and became the third country to test an independently developed nuclear weapon in October 1952. In August 1943, the Prime Minister of the United Kingdom, Winston Churchill, and the President of the U.S., Franklin D. Roosevelt, signed the Quebec Agreement, which provided for cooperation between the two countries. The Quebec Agreement established the Combined Policy Committee and the Combined Development Trust to coordinate the efforts of the UK, U. S. and Canada. In July 1941, the MAUD Committee was established to investigate further fissile isotope research. It produced an intensive research effort, directed by Sir Geoffrey Taylor, James Tuck, Niels Bohr, Peierl, Frisch, and Klaus Fuchs, who was later revealed to be a Soviet atomic spy.

In April 1947, Ernest Titterton, the last British government employee, left LA Alamos on 12 April 1947. The British government then decided to shelve its nuclear ambitions, and participate in the American project, and began working on its own atomic bomb programme. The project was eventually completed in August 1945 by supplying crucial expertise and expertise to the US in the form of the B-61 bomber, which was the first nuclear warhead to be fitted with a high-explosive fission device. It was also the first to be tested by an independent nation, and was the only one to do so before the end of the Second World War, in September 1945. The U.N. Security Council passed a resolution in July 1945 to ban all nuclear weapons in all but the most powerful weapons. The resolution was followed by the creation of the Atomic Weapons Convention in August 1947. It banned the use of nuclear weapons by all countries except the United Nations, the European Union, Australia, Canada, Japan and South Korea. It also banned the production of any nuclear weapons that could be used as a weapon of mass destruction, such as the V-2 bomb, which would be capable of destroying millions of people in a matter of hours. The United States and the UK were the first countries to test a nuclear weapon, with the first test taking place in October 1945.

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