高气压电离室宇宙射线响应试验

来源 :中国原子能科学研究院年报 | 被引量 : 0次 | 上传用户:wqvbqjxtid1
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在环境辐射监测中,需要确定仪器的宇宙射线响应特性,为此在北京密云水库(地磁纬度29°N,海拔160 m,且满足水深大于3 m、距岸边大于1 km的开阔水面要求)对自行研制的JLZ-Ⅲ型高气压电离室进行了宇宙射线响应试验,试验布置如图1所示。由于美国GE公司生产的RSS-131高气压电离室的宇宙射线响应已知,可将该仪器测量值作为参考值。试验中需对水中40K、U、Th、Ra等核素的γ射线,空气中氡子体的γ射线,探测器的自 In the environmental radiation monitoring, it is necessary to determine the cosmic ray response characteristics of the instrument. Therefore, in the Miyun Reservoir in Beijing (geomagnetic latitude of 29 ° N, elevation of 160 m and water depth greater than 3 m, open water surface greater than 1 km from the shore) The self-developed JLZ-Ⅲ high pressure ionization chamber for the cosmic ray response test, test layout shown in Figure 1. Due to the cosmic ray response of the RSS-131 high-pressure ionization chamber manufactured by GE, USA, the measured value of this instrument can be used as a reference value. In the experiment, the γ-rays of 40K, U, Th, Ra and other radionuclides in the water, γ-rays of radon progeny in the air,
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