Activity estimates of localised gamma emitting radionuclides using a GR-135 survey meter.

IF 1.4 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES
Brian Bewer
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引用次数: 0

Abstract

During the operation of high energy accelerators activated materials are commonly created. The activity and isotopes present in these materials must be characterised for their clearance and release from the facility, or to ascertain their duration of stay in a radiological storage area. An activity estimate method using a gamma detecting GR-135 survey meter, which has the ability to collect an energy spectrum, is presented. Using several reference radioactive sources the detection efficiency and dead time of the survey meter were characterised. This information combined with the physical properties of the survey meter, the counting time and the properties of the measured photon energy emissions can be used to calculate an accurate activity estimate for localised activation on accelerator components, or loose contamination on isolated waste materials.

使用 GR-135 测量仪估算局部伽马放射性核素的放射性活度。
高能加速器在运行过程中通常会产生活化材料。必须对这些材料的放射性活度和同位素进行鉴定,以便将其清除和从设施中释 放,或确定其在放射性储存区的停留时间。本报告介绍了一种使用伽马射线探测 GR-135 测量仪进行放射性活度估计的方 法,该测量仪具有收集能谱的功能。利用几种参考放射源对测量仪的探测效率和死区时间进行了鉴定。这些信息与测量仪的物理性质、计数时间和测量到的光子能量发射的特性相结合,可以用来计算加速器部件局部活化或孤立废料松散污染的准确放射性活度估计值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Radiological Protection
Journal of Radiological Protection 环境科学-公共卫生、环境卫生与职业卫生
CiteScore
2.60
自引率
26.70%
发文量
137
审稿时长
18-36 weeks
期刊介绍: Journal of Radiological Protection publishes articles on all aspects of radiological protection, including non-ionising as well as ionising radiations. Fields of interest range from research, development and theory to operational matters, education and training. The very wide spectrum of its topics includes: dosimetry, instrument development, specialized measuring techniques, epidemiology, biological effects (in vivo and in vitro) and risk and environmental impact assessments. The journal encourages publication of data and code as well as results.
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