A Method to Optimize the Electron Spectrum for Simulating Thermo-Mechanical Response to X-ray Radiation

Symmetry

Bo Wang¹  Xianwen Ran¹  Kun Zhang¹  Wenhui Tang¹ 

[1] College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China;

关键词: high altitude nuclear detonation;    soft x-ray;    thermo-mechanical deformation;    least squares method;    gasified blow-off effect;    energy-deposited profile;   

DOI  :  10.3390/sym12010059

来源: DOAJ

【 摘 要 】

The X-ray pulse originating from high altitude nuclear detonation (HAND) is mainly soft X-ray and its intensity is high enough to gasify the penetrated material and then lead to the severe thermo-mechanical deformation of unpenetrated material from the gasified blow-off effect. This effect cannot be directly reproduced in a lab for the lack of the X-ray source like HAND. At present, the low-energy relativistic electron beams resulting from an electron accelerator are usually used to approximately reproduce this effect, but the difference in the energy-deposited profile in materials between the electron and X-ray cannot be eliminated. In this paper, the symmetric linear least squares method was used to optimize the electron spectrum, and the general Monte Carlo N-Particle Transport Code calculations showed the optimized spectrum can produce the same energy-deposited profile in aluminum, copper, and tantalum with the soft X-rays like 1 keV or 3 keV spectrums. This indicates that it is possible to simulate the severe thermo-mechanical deformation resulting from HAND using the optimized electron spectrums.

【 授权许可】

Unknown