A compact electron spectrometer for hot electron measurement in pulsed laser solid interaction
A compact electron spectrometer for hot electron measurement in pulsed laser solid interaction
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用于脉冲激光固体相互作用中热电子测量的紧凑型电子能谱仪
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
D. Nelson
中科院分区：
文献类型：
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作者：
Hui;P. Patel;D. Price;B. Young;P. Springer;R. Berry;R. Booth;C. Bruns;D. Nelson
超强激光与物质的相互作用提供了一种独特的时间短、光谱宽的电子源，可以用于许多不同的应用。其中之一，我们正在追求的，是作为诊断的一部分，以跟踪磁场线在磁约束聚变装置。该方案的一个重要方面是对电子角分布和能量分布进行详细表征。为此，我们设计并建造了一个紧凑的电子谱仪，它使用永磁体进行电子能量色散，并将100多个耦合到1024×1024像素的电荷耦合器件作为检测系统。该谱仪的电子能量范围从10 keV到60 MeV。我们在Lawrence Livermore国家实验室的高强度（1017-1021 W/cm 2）短脉冲（<100 fs）激光器JanUSP上使用各种固体靶测试了光谱仪。本文将报告该光谱仪的详细情况和实验结果。
Ultraintense laser-matter interactions provide a unique source of temporally short, broad spectrum electrons, which may be utilized in many varied applications. One such, which we are pursuing, is as part of a diagnostic to trace magnetic field lines in a magnetically confined fusion device. An essential aspect of this scheme is to have a detailed characterization of the electron angular and energy distribution. To this effect we designed and constructed a compact electron spectrometer that uses permanent magnets for electron energy dispersion and over 100 scintillating fibers coupled to a 1024×1024 pixel charge coupled device as the detection system. This spectrometer has electron energy coverage from 10 keV to 60 MeV. We tested the spectrometer on a high intensity (1017–1021 W/cm2) short pulse (<100 fs) laser, JanUSP, at Lawrence Livermore National Laboratory using various solid targets. The details of the spectrometer and the experimental results will be reported.