Optimization of electron beam spectrum of simulating of X-ray thermo-mechanical response

The thermo-mechanical response of materials is an important basis for evaluating the resistance ability of materials to nuclear explosion X rays resistance. Electron beam irradiation is used to study the thermo-mechanical response of materials in laboratory and to evaluate resistance ability of materials to nuclear explosion X rays. Neglecting the difference between electron beam and X rays, this method will cause biases. MCNP and the least square method are used to optimize electron spectra for simulating the energy deposition profiles caused by 1 keV and 3 keV X rays in aluminum, copper and tantalum. The results show that it can get the same energy deposition profiles as X rays do, which can be used to evaluate resistance ability of materials to nuclear explosion X-rays, but in these processes, X rays spectrum and materials should be taken into account.