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15~600 keV脉冲硬X射线能谱测量

苏兆锋 来定国 邱孟通 任书庆 徐启福 杨实

苏兆锋, 来定国, 邱孟通, 等. 15~600 keV脉冲硬X射线能谱测量[J]. 强激光与粒子束, 2020, 32: 035005. doi: 10.11884/HPLPB202032.190354
引用本文: 苏兆锋, 来定国, 邱孟通, 等. 15~600 keV脉冲硬X射线能谱测量[J]. 强激光与粒子束, 2020, 32: 035005. doi: 10.11884/HPLPB202032.190354
Su Zhaofeng, Lai Dingguo, Qiu Mengtong, et al. Energy spectrum measurement for pulsed hard X-ray from 15 keV to 600 keV[J]. High Power Laser and Particle Beams, 2020, 32: 035005. doi: 10.11884/HPLPB202032.190354
Citation: Su Zhaofeng, Lai Dingguo, Qiu Mengtong, et al. Energy spectrum measurement for pulsed hard X-ray from 15 keV to 600 keV[J]. High Power Laser and Particle Beams, 2020, 32: 035005. doi: 10.11884/HPLPB202032.190354

15~600 keV脉冲硬X射线能谱测量

doi: 10.11884/HPLPB202032.190354
基金项目: 国家自然科学基金项目(11875214); 国家自然科学基金青年基金项目(11705150)
详细信息
    作者简介:

    苏兆锋(1981—),男,硕士,助理研究员,主要从事脉冲辐射场测量与诊断工作;suzhaofeng@nint.ac.cn

  • 中图分类号: TL81

Energy spectrum measurement for pulsed hard X-ray from 15 keV to 600 keV

  • 摘要: 介绍了基于吸收法的脉冲硬X射线能谱测量的基本原理及设计思路,完成了探测器及吸收片的选型,设计了射线准直系统,研究了散射对测量的影响,以12路PIN探测器阵列及铜、铝吸收片为测量核心部件研制了脉冲硬X射线能谱测量系统。实验测量了真空环境下“闪光二号”加速器串级二极管产生的脉冲硬X射线强度,获得了不同衰减程度的实验波形,通过解谱获得了脉冲硬X射线的能谱,光子最高能量约600 keV,平均能量约89.1 keV,与理论计算的结果比较符合。
  • 图  1  散透射比例随探测器距离的变化趋势

    Figure  1.  Change of scatter-transmission ratio under difference distance of the detectors

    图  2  单个探测器准直结构示意图

    Figure  2.  Collimating device of the detector

    图  3  光子经过不同质量厚度的吸收片后在探测器上的能量沉积曲线

    Figure  3.  Energy deposition curves of photon on the detectors after absorption plate of different mass thickness

    图  4  能谱仪实验布局照片

    Figure  4.  Photogragh of the energy spectrometer in the experiment

    图  5  能谱仪的测量波形

    Figure  5.  Measured waveforms of the spectrometer

    图  6  能谱实验结果和理论计算对比

    Figure  6.  Spectrum comparison between experiment energy and theoretical calculation

    表  1  散透射比为5%时对应的探测器与铜吸收片的距离

    Table  1.   Distance between the detector and the copper absorption plate when scatter-transmission ratio is 5%

    thickness of the copper absorption plate/mm1.002.164.105.017.007.9810.0712.00
    distance between the detector and the copper absorption plate/cm0.421.01.82.62.93.54.45.1
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-09-14
  • 修回日期:  2019-12-25
  • 刊出日期:  2020-02-10

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