Design of a multilayer mirror monochromatic x-ray imager for the Z accelerator
Design of a multilayer mirror monochromatic x-ray imager for the Z accelerator
复制标题
Z加速器多层镜单色X射线成像仪设计
DOI：
10.1063/1.1789257
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发表时间：
2004
影响因子：
1.6
通讯作者：
Jennifer Davis
中科院分区：
文献类型：
--
作者：
B. Jones;C. Deeney;A. Pirela;C. Meyer;D. Petmecky;P. Gard;R. Clark;Jennifer Davis
正在开发一种时间分辨针孔相机，用于 Z 加速器上的 z 箍缩等离子体的单色软 X 射线成像 [R. B.斯皮尔曼等人，物理学。 Plasmas 5, 2105 (1998)] 桑迪亚国家实验室。针孔图像将从平面多层镜反射到微通道板检测器上。 W/Si 或 Cr/C 多层反射以 277eV 为中心的窄能量范围（半峰全宽 <10eV），峰值反射率高达 20%。这种能量选择将允许对 Z 上的任何线阵 z 箍缩进行最终内爆成像，以及使用碳 Kα 源进行台架测试。镀铝聚对二甲苯滤光片将消除光学和二次谐波反射，34° 多层掠射角将允许探测器屏蔽 Z 加速器产生的高能 X 射线。该系统还将包括一个标准的串联针孔相机，可以对其进行滤波以获得同时更高光子能量的图像。未来的仪器可以使用多个镜子以多种能量成像......
A time-resolved pinhole camera is being developed for monochromatic soft x-ray imaging of z-pinch plasmas on the Z accelerator [R. B. Spielman et al., Phys. Plasmas 5, 2105 (1998)] at Sandia National Laboratories. Pinhole images will reflect from a planar multilayer mirror onto a microchannel plate detector. A W/Si or Cr/C multilayer reflects a narrow energy range (full width at half maximum <10 eV) centered at 277 eV with peak reflectivity up to 20%. This choice of energy will allow final implosion imaging of any wire-array z-pinch fielded on Z, as well as bench testing using a carbon Kα source. Aluminized parylene filters will eliminate optical and second harmonic reflection, and the 34° multilayer grazing angle will allow detector shielding from high energy x rays produced by the Z accelerator. The system will also include a standard in-line pinhole camera, which can be filtered to obtain simultaneous higher-photon-energy images. Future instruments could use multiple mirrors to image at several energie...