Areal density and spatial resolution of high energy electron radiography

doi:10.1088/1674-1056/27/3/035202

Abstract Ultrafast imaging tools are of great importance for determining the dynamic density distribution in high energy density (HED) matter. In this work, we designed a high energy electron radiography (HEER) system based on a linear electron accelerator to evaluate its capability for imaging HED matter. 40 MeV electron beams were used to image an aluminum target to study the density resolution and spatial resolution of HEER. The results demonstrate a spatial resolution of tens of micrometers. The interaction of the beams with the target and the beam transport of the transmitted electrons are further simulated with EGS5 and PARMELA codes, with the results showing good agreement with the experimental resolution. Furthermore, the experiment can be improved by adding an aperture at the Fourier plane.

Keywords: high energy density matter high energy electron radiography areal density resolution spatial resolution

Received: 14 August 2017
Revised: 18 December 2017
Accepted manuscript online:

PACS:

52.70.-m

(Plasma diagnostic techniques and instrumentation)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11435015 and 11505251), the Ministry of Science and Technology of China (Grant No. 2016YFE0104900), and the Chinese Academy of Sciences (Grant Nos. 28Y740010 and 113462KYSB20160036).

Corresponding Authors: Shuchun Cao, Rui Cheng
E-mail: caosch@impcas.ac.cn;chengrui@impcas.ac.cn

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Jiahao Xiao(肖家浩), Zimin Zhang(张子民), Shuchun Cao(曹树春), Ping Yuan(袁平), Xiaokang Shen(申晓康), Rui Cheng(程锐), Quantang Zhao(赵全堂), Yang Zong(宗阳), Ming Liu(刘铭), Xianming Zhou(周贤明), Zhongping Li(李中平), Yongtao Zhao(赵永涛), Chuanxiang Tang(唐传祥), Wenhui Huang(黄文会), Yingchao Du(杜应超), Wei Gai(盖炜) Areal density and spatial resolution of high energy electron radiography 2018 Chin. Phys. B 27 035202

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