5种固体径迹氡探测器某些性能的比较以及火花计数器的改进

THE PERFORMANCE COMPARISON OF FIVE KINDS OF SOLID STATE NUCLEAR TRACK DETECTER (SSNTD) FOR RADON AND THE DEVELOPMENT OF SPARK COUNTER

摘要: 对5种固体径迹氡探测器的相对误差、探测下限和探测效率等性能作比较测试后,推荐出一种有推广价值的探测器。改进了火花计数器的成形电路,并对计数器中心电极尺寸、重物等予以研究。改进后的火花计数器的径迹密度测量上限经“重孔”校正后,对直径为21、16和11mm的中心电极分别为4000、4600和5000/cm~2。

Abstract: The relative error, lower level of detection (LLD) and detectable efficiency of five kinds of SS-NTD for radon are compared, and one of them is recommended. The circuit, the size of thick electrodeand the weight of spark counter are researched. For varying thick electrode diameter (φ11, φ16,φ21) of spark counter, the upper linearity limit of track density are 5000, 4600 and 4000 tracks/cm~2, respectively.