利用针孔和对数螺旋晶体对Z箍缩等离子体进行K壳层发射X射线成像

K-shell emission x-ray imaging of Z-pinch plasmas with a pinhole and a logarithmic spiral crystal.

作者信息

Yang Qingguo, Li Zeren, Peng Qixian, Yang Libing, Chen Guanhua, Ye Yan, Huang Xianbin, Cai Hongchun, Li Jing, Xiao Shali

机构信息

Institute of Fluid Physics, CAEP, Mianyang, Sichuan 621900, People's Republic of China.

出版信息

Rev Sci Instrum. 2011 Sep;82(9):093301. doi: 10.1063/1.3634002.

DOI:10.1063/1.3634002

PMID:21974579

Abstract

An in-chamber, mini x-ray imaging instrument employs a pinhole and a logarithmic spiral crystal has been developed for obtaining K-shell line images of the imploding aluminum wire array on the "Yang" accelerator. The logarithmic spiral crystal acts as a monochromator and a non-dispersive mirror that reflects the pinhole image to a x-ray film detector with a very narrow photon energy bandwidth (<1 eV, mainly determined by the width of rocking curve of the crystal). Two imaging configurations with the use of Quartz (10 ̅10) crystal and Mica (002) crystal are designed, respectively, to image the Al Ly(α2) line (1727.7 eV) emission and Al He(α) intercombination line (1588.3 eV) emission. The primary experimental data corresponding to these two configurations are presented and discussed.

摘要

一种用于腔室内的微型X射线成像仪器，它采用针孔和对数螺旋晶体，已被开发用于在“阳”加速器上获取内爆铝丝阵列的K壳层线图像。对数螺旋晶体充当单色器和非色散镜，将针孔图像反射到具有非常窄光子能量带宽（<1 eV，主要由晶体摇摆曲线宽度决定）的X射线胶片探测器上。分别设计了使用石英（10 ̅10）晶体和云母（002）晶体的两种成像配置，以对Al Ly(α2)线（1727.7 eV）发射和Al He(α)复合线（1588.3 eV）发射进行成像。给出并讨论了与这两种配置对应的主要实验数据。