ASTRO-E high-resolution x-ray spectrometer
ASTRO-E high-resolution x-ray spectrometer
复制标题
ASTRO-E 高分辨率 X 射线光谱仪
DOI：
10.1117/12.366493
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
A. Szymkowiak
中科院分区：
文献类型：
--
作者：
R. Kelley;M. D. Audley;K. Boyce;S. Breon;R. Fujimoto;K. Gendreau;S. Holt;Y. Ishisaki;D. McCammon;T. Mihara;K. Mitsuda;S. Moseley;D. B. Mott;F. Porter;C. Stahle;A. Szymkowiak
Astro-E高分辨率X射线光谱仪（XRS）是由美国航天局/戈达德航天飞行中心和日本空间和天文科学研究所联合研制的。该仪器基于一种新的光谱学方法，即X射线微量热计。该设备以极高的精度将单个x射线光子的能量感测为热量。一个32通道阵列的微量热计正在使用，每个能量分辨率约为12 eV，在6千电子伏。这将提供比任何其他非色散X射线光谱仪高10倍的光谱分辨率。该仪器包括一个三级冷却系统，能够在60 mK的轨道上运行阵列约两年。该阵列位于掠入射锥形反射镜的焦点处。微量热计的量子效率和X射线反射镜系统的反射率联合收割机结合在一起，在0.3- 12 keV的能量带上产生高通量。这种新的能力将使研究范围广泛的高能量天体物理源具有前所未有的光谱灵敏度。本文介绍了XRS的基本设计要求和实现方法，并对仪器的参数和性能进行了描述。
The Astro-E High Resolution X-ray Spectrometer (XRS) was developed jointly by the NASA/Goddard Space Flight Center and the Institute of Space and Astronomical Science in Japan. The instrument is based on a new approach to spectroscopy, the x-ray microcalorimeter. This device senses the energies of individual x-ray photons as heat with extreme precision. A 32 channel array of microcalorimeters is being employed, each with an energy resolution of about 12 eV at 6 keV. This will provide spectral resolving power 10 times higher than any other non-dispersive x-ray spectrometer. The instrument incorporates a three stage cooling system capable of operating the array at 60 mK for about two years in orbit. The array sits at the focus of a grazing incidence conical mirror. The quantum efficiency of the microcalorimeters and the reflectivity of the x-ray mirror system combine to give high throughput over the 0.3- 12 keV energy band. This new capability will enable the study of a wide range of high-energy astrophysical sources with unprecedented spectral sensitivity. This paper presents the basic design requirements and implementation of the XRS, and also describes the instrument parameters and performance.