Spectral and Temporal Fidelity of a Hard X-Ray Weapons Effects Simulation Test in a High-Gain ICF (Inertial Confinement Fusion) Facility

摘要

The MORSE-CG Monte Carlo code was used to simulate the effects of hard X rays from a nuclear weapon. Facility will be an inertial confinement fusion facility for the testing of high-gain deuterium-tritium (DT) pellets, and will produce a pulse of hard X rays and neutrons over a very short time interval. A spherical shell for 6LiH with a thickness of 60 cm was found to spread an instantaneous 10 keV X-ray pulse temporally over a period of 16 ns. The peak of the X-ray spectrum shifted down in energy from the 37.5 keV peak of the input spectrum to a final energy of 25 keV. Eighty-seven percent of the source X-ray intensity was lost to the LiH, resulting in a final fluence of 10.8 cal/sq cm and a final dose of 9.3 Mrads(Si) 250 cm from the source. Fifty percent of the X-ray dose arrived during an interval of 6 ns, giving a dose rate of 8 x 10 to the 14th power rads (Si)/sec. The only serious problem with the use of the LMF for hard X-ray simulation was the fluence of one-MeV-equivalent neutrons. The minimum fluence achieved was on the order of 10 to the 14th power n/sq cm. Theses. (JHD)