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OPERATION SANDSTONE. Scientific Director's Report of Atomic Weapon Tests at Eniwetok, 1948. Annex 8. Gamma-Ray Measurements. Parts 1, 2, 3, 4, and 5.
LOS ALAMOS SCIENTIFIC LAB ALBUQUERQUE NM ALBUQUERQUE
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Curves of absorption of gamma rays in boron carbide and a few points on the absorption curve in lead were obtained during the three atomic explosions of Operation Sandstone. Radiation was detected by integrating ionization chambers and by photographic emulsions. A few recording-type ionization chambers were used to give intensities as a function of time. Radiation detectors were located inside of shelters which protected them from blast and shielded them from scattered radiation. Because of geometry, scattered radiation was negligible and the analysis of absorption curves yields the true total absorption coefficient for the radiation.
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