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优化充满空气的离子脉冲电离室的一些参数,以有效检测

Mansour Esmaeili-Sanjavanmareh¹, Mehdi Sohrabi¹, Morteza Habibi¹

¹Health Physics and Dosimetry Research Laboratory, Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Iran.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

|June 5, 2023

概括

这项研究优化了充满空气的电离室,以精确检测. 通过使用加菲尔德++模拟,研究人员减少了充电收集时间,从而能够准确测量高达几十kBq.m-3.0的子活动度.

科学领域:

核仪器仪表和辐射检测.
环境放射性监测环境中的放射性监测.

背景情况:

充满空气的电离室提供精确的低水平探测,但在电荷收集持续时间和环境敏感性方面面临挑战.
现有的方法需要改进,以更快,更可靠地监测.

研究的目的:

为了克服传统的电离室对于子检测的局限性.
优化室内设计和电子系统,以缩短充电收集时间.
研究环境因素对测量精度的影响.

主要方法:

使用Garfield++软件进行现实的辐射探测器模拟.
使用加菲尔德++接口与Magboltz计算不同湿度和电场下的空气气体参数.
根据管/电线半径和电势计算的最大电荷收集持续时间.
分析了空气压力,温度和湿度对电荷收集的影响.

主要成果:

模拟表明,具有数百伏偏差的中等尺寸 (1L) 充满空气的电离室可以达到100毫秒以下的外部电路时间常数.
这种缩短的时间常数明显低于以前报告的值.
环境因素如压力,温度和湿度被量化为它们对电荷收集的影响.

结论:

充满空气的电离室和相关电子设备的优化设计允许在脉冲模式下测量高达几十kBq.m-3的子活动度.
该研究为设计有效的监测设备提供了关键数据,指定了室尺寸,偏向电压和读出电子.
这项研究有助于为各种应用开发改进的探测系统.

关键词:

充满空气的电离室.嘉菲尔德++++++++++++++加菲尔德++++++加菲尔德++++++加菲尔德++++加菲尔德离子脉冲脉冲是一种拉顿是一种激素.在 SRIM 里面,你会看到 SRIM.群体参数群体参数

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