2&pi;&alpha;、2&pi;&beta;粒子发射率现场校准装置的建立

李泽西; 贺海江; 梁珺成; 单健; 甘亚洲; 杨志杰; 刘皓然; 张明

doi:10.3969/j.issn.1000-1158.2017.01.25

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计量学报 ›› 2017, Vol. 38 ›› Issue (1) : 117-122. DOI: 10.3969/j.issn.1000-1158.2017.01.25

电离辐射、标准物质与生物计量

2πα、2πβ粒子发射率现场校准装置的建立

李泽西^1,2,贺海江^2,3,梁珺成²,单健¹,甘亚洲⁴,杨志杰^2,3,刘皓然²,张明²

作者信息 +

The Establishment of the On-site Calibration Device for 2πα and 2πβ Particle Emission Rate Measurement

LI Ze-xi^1,2,HE Hai-jiang^2,3,LIANG Jun-cheng²,SHAN Jian¹,GAN Ya-zhou⁴,YANG Zhi-jie^2,3,LIU Hao-ran²,ZHANG Ming²

Author information +

文章历史 +

摘要

基于大面积无窗流气正比计数器和多道能谱测量单元,建立了2πα、2πβ粒子发射率现场校准装置。性能测试结果表明:该装置对α平面源的坪区为700～1 500V,坪长为800V,坪斜为0.25%／100V;对β平面源的坪区为1650～2050V,坪长为400V,坪斜为0.44%／100V。使用该装置测量2πα、2πβ粒子发射率基准装置定值的标准平面源,经各项修正后,结果与基准测量结果在不确定度范围内一致。在现场校准了一批α、β标准平面源,校准结果与上一校准周期的结果在不确定度范围内一致,验证了该装置作为现场测量标准装置实现粒子发射率量值现场传递的可行性。

Abstract

Based on a large-area, windowless, gas-flow proportional counter, an alpha/beta 2π emission rate on-site calibration device is established. Performance tests are taken and the results show that the plateau of alpha lasts from 700 V to 1 500 V, the length is up to 800V and the slope is 0.25% per 100V, the plateau of beta lasts from 1650V to 2050V, the length is up to 400V and the slope is 0.44% per 100V. This on-site calibration device is used to measure the standard surface sources which are calibrated by the the absolute alpha/beta 2π emission rate measuring system, the results are well agreed with the standard values within the range of uncertainties.On-site measurement of another group of standard surface sources are taken, values of corrected results are agreed with the values calibrated in previous cycles within the range of uncertainties, which verifies the feasibility of this calibration device to deliver the on-site standard values.

导出引用

李泽西,贺海江,梁珺成,单健,甘亚洲,杨志杰,刘皓然,张明. 2πα、2πβ粒子发射率现场校准装置的建立[J]. 计量学报. 2017, 38(1): 117-122 https://doi.org/10.3969/j.issn.1000-1158.2017.01.25

LI Ze-xi,HE Hai-jiang,LIANG Jun-cheng,SHAN Jian,GAN Ya-zhou,YANG Zhi-jie,LIU Hao-ran,ZHANG Ming. The Establishment of the On-site Calibration Device for 2πα and 2πβ Particle Emission Rate Measurement[J]. Acta Metrologica Sinica. 2017, 38(1): 117-122 https://doi.org/10.3969/j.issn.1000-1158.2017.01.25

中图分类号： TB98

参考文献

［1］梁珺成,李奇,柳加成,等. 2πα、2πβ粒子发射率的绝对测量［J］. 计量学报, 2016,37(2): 209-213.
［2］黄秋,方方,杨勇,等.2πα、2πβ粒子发射率副基准复现单位量值研究［J］. 核电子学与探测技术,2012,32(4):471-474.
［3］许荩,漆明森,程瑛,等.影响表面污染仪测量准确度的因素研究［C］//2010国防计量与测试学术交流会论文集,武汉, 2010.
［4］Wuu J L, Yuan M C, Su S H, et al. The alpha and beta emitter measurement system in INER［J］. Applied Radiation and Isotops, 2002, 56(s 1-2):261-264.
［5］King L E, Hutchinson J M R, Unterweger M P. A new large-aera 2π proportional counting system at NIST［J］. Applied Radiation and Isotops, 2008, 66(6-7):877-880.
［6］Hutchinson J M R, Bright S J. The NBS large-aera alpha-particle counting system［J］. Journal of Research of the National Bureau of Standards, 1987, 92(5):311-324.
［7］王金.基于C++Builder的系统可靠性信息采集处理软件设计［D］.兰州:兰州大学,2012.
［8］杨杰.数据采集系统中数据获取和处理的C++Builder实现［J］. 重庆工学院学报,2005,19 (3):51-54.
［9］饶文碧,陈旭辉,徐锐. 基于C++Builder的图形图像处理方法［J］. 交通与计算机,2002,20 (2):61-63.
［10］GB／T 16698—2008,α粒子发射率的测量大面积正比计数管法［S］.
［11］周丰群,杨景康,拓飞,等. HP Ge γ谱仪系统死时间校正方法的实验研究［J］. 高能物理与核物理,2005,(12):1175-1178.
［12］JJF 1059—1999,测量不确定度评定与表示［S］.