Broadband, high dynamics and high resolution charge coupled device-based spectrometer in dynamic mode for multi-keV repetitive x-ray sources
Broadband, high dynamics and high resolution charge coupled device-based spectrometer in dynamic mode for multi-keV repetitive x-ray sources
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DOI：
10.1063/1.3189004
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发表时间：
2009-08-01
影响因子：
1.6
通讯作者：
Santos, J. J.
中科院分区：
文献类型：
--
作者：
Fourment, C.;Arazam, N.;Santos, J. J.
我们提出了一种新的工作模式，使用带电耦合装置作为专用于多kev域重复x射线源的无色散光谱仪。这使得在较短的采集时间内获得具有高统计量的光谱，并且与其他需要积累的诊断操作相兼容。讨论了几种扩展事件的重建算法，并利用单像素事件证明了接近法诺极限的分辨率。在这种情况下，提出了一种考虑事件部分取消的方法。对探测器进行了实验表征和详细建模，可以确定光子的绝对数量，精度为+/- 35%。本文报道了由短脉冲激光产生的等离子体发射的5- 25kev x射线的特性，以及它们与原子序数、激光持续时间和能量的关系。(C) 2009年美国物理研究所。(DOI: 10.1063/1.3189004)
We present a new operating mode, using a charged coupled device as dispersionless spectrometer dedicated to repetitive x-ray sources in the multi-keV domain. This enables to get spectra with high statistics in a short acquisition time and a way compatible with the operation of other diagnostics requiring accumulation. Several reconstruction algorithms for the spreading events are discussed, and a near Fano-limited resolution is demonstrated by using single pixel events. In this case, a method to take into account partial canceling of the events is presented. Experimental characterization and detailed modeling of the detector are performed, which allow to determine absolute number of photon with +/- 35% accuracy. Characterization of the 5-25 keV x rays emitted by a short pulse laser-produced plasma is reported, as well as their dependency with the atomic number, the laser duration, and energy. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3189004]