| 施军,刘锋,杨祖华,钱凤,曹磊锋.用于等离子体诊断的新型X射线谱仪[J].光电子激光,2017,28(3):238~242 |
| 用于等离子体诊断的新型X射线谱仪 |
| A novel X-ray spectrometer for plasmas diagnosis |
| 投稿时间：2016-02-21 |
| DOI： |
| 中文关键词: 等离子体 光谱仪 椭圆晶体 X射线光谱 成像 |
| 英文关键词:plasma spectrometer elliptical crystal x-ray spectrum imaging |
| 基金项目:国家自然科学基金(11075226)和重庆市基础与前沿研究计划(cstc2014jcyjA90010)资助项目 (1.重庆大学 光电技术及系统教育部重点实验室,重庆 400044； 2.中国工程物理研究院激光聚变研究中心,四川 绵阳 621900) |
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| 中文摘要: |
| 为了诊断热核聚变等离子体状态,研制了用于热 斑区等离子体诊断用的新型X射线谱仪,能够同 时探测X射线光谱与聚爆靶图像信息。光谱检测功能由4块椭圆晶体分析器实现,分别覆盖2~20keV能带范围不同能带的X射；图像检测功能由分幅相机匹配小孔 阵列成像完成,理想状态能够得到20幅不同时间的聚爆靶图像。在中 物院“神光- Ⅱ”升级装置上进行了打靶实验,获取了X射线光谱与聚爆靶图像信号。分析了光谱及图像 信息,并针对光谱 仪漏光问题改进了谱仪结构。在神光-Ⅲ原型装置上进行了验证实验,获得比较理想的 图像信号,信噪比(SNR)数据达到30。 |
| 英文摘要: |
| A novel X-ray spectrometer is designed to diagnose the plasma conditi ons.It can provide simultaneously X-ray spectroscopy and plasma image information.Four elliptical ly bent crystal analyzers are used to detect the X-ray spectroscopy in the rang e of 2－20keV.The pinhole imaging systems coupled with gated micro-channel plate (MCP) detectors are developed to detect the image,and it al lows 20images to be collected in a single experiment.The experiments are conduc ted to demonstrate the utility of the spectrometer at "Shenguang-Ⅱ" upgrading laser facility in China Academy of Eng ineering Physics.The X-ray spectroscopy and hot sport image information are obtained by the spectrom eter,and the proposed scheme can improve the capability of the spectrometer.Finally,experiments are done at “Shenguang- Ⅲ”laser facility,the ideal images are obtained,and the signal -to-noise ratio can raach 30. |
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