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The cover to the Project 4.1 Final Report, "Study of Response of Human Beings Accidentally Exposed to Significant Fallout Radiation" Project 4.1 was the designation for a medical study and experimentation conducted by the United States of those residents of the Marshall Islands exposed to radioactive fallout from the 1 March 1954 Castle Bravo nuclear test at Bikini Atoll, which had an ...
2007 United States Air Force nuclear weapons incident; A. ... Project 4.1; R. ... 1964 Savage Mountain B-52 crash; SL-1; Sodium Reactor Experiment; Sylvania Electric ...
Production of parts for nuclear weapons began in 1953. At the time, the precise nature of the work at Rocky Flats was a closely guarded secret. The plant produced fission cores for nuclear weapons, used to "ignite" fusion and fissionable fuel. [12] Fission cores resemble miniaturized versions of the Fat Man nuclear bomb detonated above Nagasaki ...
The limiting value of the albedo for high-Z materials is reached when the thickness is 5–10 g/cm 2, or 0.5–1.0 free paths. Thus, a hohlraum made of uranium much thicker than a free path of uranium would be needlessly heavy and costly. At the same time, the angular anisotropy increases as the atomic number of the scatterer material is reduced.
Mushroom cloud from China's first nuclear test, Project 596. China tested its first nuclear weapon device ("596") in 1964 at the Lop Nur test site. The weapon was developed as a deterrent against both the United States and the Soviet Union. Two years later, China had a fission bomb capable of being put onto a nuclear missile.
According to Vanunu, this plant had been producing nuclear weapons for 10 to 20 years. [19] It is estimated that there may be around 200 nuclear weapons in possession of Israel's nuclear weapons program. [20] Vanunu demonstrated his knowledge to Frank Barnaby and Theodore Taylor, and they confirmed the credibility of his story.
The United States completed six high-altitude nuclear tests in 1958, but the high-altitude tests of that year raised a number of questions. According to U.S. Government Report ADA955694 on the first successful test of the Fishbowl series, "Previous high-altitude nuclear tests: Teak, Orange, and Yucca, plus the three ARGUS shots were poorly instrumented and hastily executed.
Operation Teapot was a series of 14 nuclear test explosions conducted at the Nevada Test Site in the first half of 1955. It was preceded by Operation Castle , and followed by Operation Wigwam . Wigwam was, administratively, a part of Teapot , but it is usually treated as a class of its own.