![]() In an article by R.I Len, published in the journal, “Bulletin of the Atomic Scientist,” II, 206,230 (1955), it is stated, “… The amount of time which will be required for a radioactive cloud to travel over a distance of 110 miles (176 kilometers) from the location of the explosion, including the period of deposition of the radioactive particles, is five hours.” This information allows us to find the value 176/5 = 35 km/h for the wind speed. This data can be obtained if the wind speed is known. It is essential to know exactly when (how much time after the explosion) did the said particles reach a given location. Gamma radiation dosages 36 hours after the fall of radioactive particles in roentgens (R) Reports written by the American Atomic Energy Commission on 15 February 1955 published the following data on levels of gamma radiation on the path:ĭistance from the explosion in kilometers These calculations, as will be shown, point to an important principle about the nature of the fallout in the Bikini region, and enable us to articulate crucial inferences about the materials with which the hydrogen bomb was armed. Moreover, an additional calculation is made on the basis of the data from the RDS-6 explosion. In both cases, the calculation was produced from the data on the radioactive path resulting from the surface blast at UP-2 in 1954 of a device that had a yield of 3 thousand tons. We theoretically calculated the activity on the path that arose during the explosion of an atomic bomb of the same yield as the hydrogen bomb in Bikini (14 Megatons according to official data).The activities on the path were produced by fission fragments which came about as a result of the primary.Our report considers only that activity which was produced by fission fragments. It is necessary to take into consideration that part of the was produced by the neutrons formed during a thermonuclear reaction. How reach the fallout path? Primarily, due to fissile material from an atomic charge (either uranium or plutonium), which is utilized for the purpose of the initiation of a thermonuclear reaction. This assessment may be compared with the outcomes observed in the Bikini region. Thus, we set ourselves on a task to develop an assessment of the radioactive contamination which is to be expected following the 1 March 1954 explosion at Bikini, if it would be possible to calculate it from the data on our own nuclear weapons tests. This formula allows us to assess the dose levels on the path for a device, if radiation levels for any path are known.Īs is known, such dosage assessments assume great significance in the period before the conducting of new tests, and they provide a foundation for various practical activities regarding the provision of security for any humans and animals that may be found in the vicinity of the radioactive cloud’s path. Consequently, the scaling of the radioactive fallout path formula, proposed by N.N Semenov, was evaluated. Such information makes an assessment possible of the nature of the exploding materials, and particularly-.Īssessments of such nature were made possible in 1954 when N.N Semenov, N.A Dmitriev, V.N Rodigin, and N.M Emanuel, produced a summary of the data on the radioactive contamination which was produced as a consequence of detonations of the RDS device at the UP-2 (see report no. However, the information published in print is of interest for other reasons as well. These reports particularly emphasize the high levels of gamma radiation along the fallout path, and in relation to this, the dangers which may arise after the detonation of hydrogen bombs. Official international sources (“A report by the United States Atomic Energy Commission on the effects of high-yield nuclear explosions” from 15 February 1955) as well as the press have recently given much attention to the question of the radioactive contamination created after the explosion of the hydrogen bomb at Bikini on 1 March 1954. ![]() “Regarding the Nature of the fallout path of the Hydrogen Bomb detonated on 1 March 1954 at Bikini. ![]()
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