一种用于高能量密度等离子体的高分辨率成像X射线晶体光谱仪。

A high-resolution imaging x-ray crystal spectrometer for high energy density plasmas.

作者信息

Chen Hui, Bitter M, Hill K W, Kerr S, Magee E, Nagel S R, Park J, Schneider M B, Stone G, Williams G J, Beiersdorfer P

机构信息

Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550-9234, USA.

Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA.

出版信息

Rev Sci Instrum. 2014 Nov;85(11):11E606. doi: 10.1063/1.4891053.

DOI:10.1063/1.4891053

PMID:25430352

Abstract

Adapting a concept developed for magnetic confinement fusion experiments, an imaging crystal spectrometer has been designed and tested for HED plasmas. The instrument uses a spherically bent quartz [211] crystal with radius of curvature of 490.8 mm. The instrument was tested at the Titan laser at Lawrence Livermore National Laboratory by irradiating titanium slabs with laser intensities of 10(19)-10(20) W/cm(2). He-like and Li-like Ti lines were recorded, from which the spectrometer performance was evaluated. This spectrometer provides very high spectral resolving power (E/dE > 7000) while acquiring a one-dimensional image of the source.

摘要

借鉴为磁约束聚变实验开发的一个概念，设计并测试了一种用于高能量密度（HED）等离子体的成像晶体光谱仪。该仪器使用一块曲率半径为490.8毫米的球形弯曲石英[211]晶体。该仪器在劳伦斯利弗莫尔国家实验室的泰坦激光器上进行了测试，通过用强度为10(19)-10(20)W/cm(2)的激光照射钛板。记录了类氦和类锂钛线，据此评估了光谱仪的性能。该光谱仪在获取源的一维图像时提供了非常高的光谱分辨率（E/dE > 7000）。