外文题目: High-energy electron radiography of microstructures in a dense material
作者: Qi, Rong; Tian, Ye; Zhang, Guo-Qing; Bai, Ya-Feng; Zhou, Shi-Yi; Zeng, Yu-Shan; Sun, Hai-Yi; Wang, Xing-Tao; Li, Xiao-Ya; Liu, Jian-Sheng
刊名: Eur. Phys. J.-Appl. Phys
年: 2016 卷: 75 期: 3 文章编号：30701
英文关键词:

LASER
英文摘要:
This study presents experimental and numerical results for the high-energy electron-beam radiography of two types of microstructures in a dense material. A copper step target with 1- and 4-mm-thick steps is irradiated by an electron beam with an energy of 150 MeV. A peak and valley structure with 285 mu m width was observed in 4-mu m step target experiment, as indicated by the "valley to peak" feature at the 4-mm step boundary caused by multiple scattering. In a gap-target experiment, the rate of increase of the penetrant-electron counts with a gap width of 500-900 mu m grows from 1.5 to 2.5 times the background counts. Consequently, the width of the gaps can be approximately deduced from the ratio of the penetrant-electron counts combined with the peak value. The features observed in the experiment are reproduced by a Monte Carlo-FLUKE code with parameters similar to those used experimentally.


文献类型: 期刊论文
正文语种: English
收录类别: SCIEI
DOI: 10.1051/epjap/2016160009


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