新型CVD金刚石X射线探测器时间性能初步研究  

Preliminary Study of Temporal Performances of a Novel CVD Diamond X-Ray Detector

作　　者：侯立飞[1] 杜华冰[1] 车兴森[1] 韦敏习[1] 余波[1] 杨国洪[1] 刘慎业[1] Hou Lifei;Du Huabing;Che Xingsen;Wei Minxi;Yu Bo;Yang Guohong;Liu Shenye(Research Center of Laser Fusion,China Academy of Engineering Physics,Mianyang,Sichuan 621900,China)

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《光学学报》2018年第7期31-35,共5页Acta Optica Sinica

基　　金：国家自然科学基金(11775203);中国工程物理研究院院长基金(YZJJLX 2016007)

摘　　要：在微带结构化学气相沉积(CVD)探测器的基础上,利用同轴结构输出部件结合隔离直流电路制作了单端连接同轴探测器,该探测器主要用于激光等离子体的X射线测量。探测器采用直径为4mm的圆柱体CVD金刚石,金刚石一个端面镀有网格状电极,另一端镀有圆盘状电极。网格状电极既可保证正常施加偏压,也可使X射线直接照射至金刚石表面。在短脉冲激光装置上开展了探测器的时间响应特性实验,结果显示探测器上升时间为61ps。CVD金刚石探测器的时间性能研究为探测器的优化改进奠定了基础。Based on the microstrip structure chemical vapor deposition（CVD）detectors,a coaxial detector with a single-ended connector has been manufactured using coaxial structure output components combined with isolated direct current circuits.The detector is mainly used for X-ray measurement of laser plasma.The detector uses a cylinder CVD diamond with the diameter of 4 mm.One end of the diamond is plated with a piece of grid electrode and the other end is plated with a piece of disc-shaped electrode.The grid electrode can ensure the normal application of the bias,but also allows X-ray to directly irradiate on the surface of the diamond.The temporal response performance experiment of the detector is tested on short pulse laser equipment.The results show that the rising time of the detector is 61 ps.The temporal performance study of CVD diamond detectors lays the foundation for the optimization of detectors.

关 键 词：探测器 化学气相沉积 X射线探测器 网格状电极 时间特性 

分 类 号：O436[机械工程—光学工程]