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Theoretical Calculation of X-Radiation from Non-Equilibrium Alumbium Plasmas
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
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TORCH, a computer code which calculates the spectrum arising from the radiation of a metallic plasma, is described. The population of each ionic species is determined from a time-dependent corona model which includes three- body recombination. Both time-resolved and time-integrated spectra are obtained, showing the contributions brom bremsstrahlung, recombination radiation, and line radiation. Ion and electron temperatures are allowed to differ, with radiative losses causing continuous electron cooling. Energy may be added to the electrons andor ions at arbitrary rates, for arbitrary times, and TORCH will compute the temperatures based on the rates of radiation, ionization, and electron-ion energy exchange. Calculations are included for aluminum plasmas with electron densities of 10 to the power of 18 to 10 to the power of 21CC and electron temperatures of 10 eV to several KeK. Also included are calculations of radiation from a deuterium plasma with 5 aluminum impurities.
APPROVED FOR PUBLIC RELEASE