Initial Nuclear Radiation Support Studies.
Final rept. 1 Jul 73-30 Jun 74,
RADIATION RESEARCH ASSOCIATES INC FORT WORTH TEX
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The energy-and-angle distribution of fission-product gamma rays from three nuclear weapon detonations has been calculated for burst elevation angles of 5 degrees, 15 degrees, and 30 degrees from a point on the ground at which 30 PSI would occur. All weapon yields were 300 KT, 5050 fissionfusion. One detector for each burst was located 1 meter above the ground at a distance corresponding to an overpressure of 30 PSI. The effects of debris cloud rise and expansion, source decay, volume source, fireball density, and hydrodynamic enhancement were included. Ground effects were included for fireball and gamma-ray transport perturbations. Ground effects on the shock front were included by instantaneously doubling the yield for shock propagation for the 5 degrees and 15 degrees burst elevation angles. The ground was ignored for effects on shock for the 30 degrees burst elevation case. Output consists of the energy-and-polar-angle distribution of gamma rays relative to the initial burst-point to detector axis. The azimuthal-dependent fluence was also calculated but the data are not reported here due to the large size of the arrays.
- Nuclear Radiation Shielding, Protection and Safety