Development and performance evaluation of a 2π windowless large-area proportional counter for surface emission rate measurements

IF 3.5 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2026-10-28 DOI:10.1016/j.radphyschem.2026.114579

Wan-Tzu Hung, Wei-Han Chu, Teng-hung Tsou, Ming-Chen Yuan, Rong-Jiun Sheu

引用次数: 0

Abstract

An upgraded, custom-built 2π windowless large-area proportional counter demonstrated exceptional operational reliability, thoroughly validated through long-term stability monitoring and national/international intercomparisons. Optimizing the electric field distribution and narrowing the anode wire spacing enhanced spatial uniformity and stabilized net emission rates across all key performance indicators. Through the integration of dynamic flow equilibrium and real-time barometric compensation, continuous tracking confirmed high measurement repeatability within stringent uncertainty limits, yielding highly consistent standard deviations. Furthermore, bilateral evaluations against NPL and PTB standards, alongside multi-year national proficiency tests, successfully substantiated the long-term stability and practical applicability of this upgraded system for surface emission rate measurements in Taiwan.

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用于表面发射率测量的2π无窗大面积比例计数器的研制与性能评价

定制的升级版2π无窗大面积比例计数器显示出卓越的运行可靠性，并通过长期稳定性监测和国内/国际比较得到了彻底验证。优化电场分布和缩小阳极线间距增强了空间均匀性，并稳定了所有关键性能指标的净发射率。通过动态流动平衡和实时气压补偿的集成，连续跟踪在严格的不确定度范围内确认了高测量重复性，产生高度一致的标准偏差。此外，针对NPL和PTB标准的双边评估，以及多年的国家能力测试，成功地证实了该升级系统在台湾地表排放率测量的长期稳定性和实际适用性。

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

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.