期刊论文

Experimental Study on the Peaks Overlap Factor in the Continuous Measurement of 222 ^Rn/220^ Rn Progeny Gathering α Energy Spectrum

Xiao, D.-T.

中文

核电子学与探测技术

0258-0934

2015

35

2

176-179

10.3969/j.issn.0258-0934.2015.02.015

11375083:国家自然科学基金 11475082:国家自然科学基金 2013KJ30:衡阳市科技计划

本校为第一且通讯机构

为配合222^Rn/220^Rn子体连续测量仪的研制,开展了用222^Rn/220^Rn子体测量仪采集α能谱的峰重叠因子研究。本研究以国家标准222^Rn室与220^Rn室分别作为纯222Rn子体与220^Rn子体测量环境,用222^Rn/220^Rn子体连续测量仪采集222^Rn子体与220^Rn子体α能谱,求得各α能峰的重叠因子。研究结果表明：非真空条件下220Rn子体发射的8.78Me Vα粒子慢化到7.69Me Vα能谱峰计数区,以及222^Rn子体发射的7.69Me Vα粒子慢化到6.00Me Vα能谱峰计数区的概率较大,可取0.0335、0.1791作为表征α能谱峰重叠情况的峰重叠因子θ1、θ2典型值。而8.78Me Vα粒子慢化到6.00Me Vα能谱峰计数区的概率非常小,其峰重叠...

In order to smoothly develop the α spectroscopy-based continuous measurement instrument of 222Rn/220Rn progeny, the reseach of peak overlap factor of α spectroscopy achieved by the continuous measurement instrument was performed. The 222Rn chamber(national standard), 220Rn chamber were used as measurement environment of pure 222Rn, 220Rn progeny respectively, and the peaks overlap factors have been calculated by α energy spectrums of 222Rn(or 222Rn) progeny, which was gathered from the measurement environment by the continuous measurement in...