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使用过器对RPLGD进行马射线剂量测量的响应控制,用于BNCT

K Tochitani¹, K Tomiyoshi¹, T Inoue¹

¹Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan.

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

|June 23, 2023

概括

研究人员开发了一种新的过方法,使用专门的光玻璃剂量计来准确测量混合中子-射场中的马射线,这对于中子捕获疗法 (BNCT) 应用至关重要.

科学领域:

医学物理医学物理
辐射剂量计辐射剂量计
核工程核工程是指核工程.

背景情况:

子中子捕获疗法 (BNCT) 使用B中子捕获反应进行细胞选择性放射治疗.
基于加速器的中子源 (ABNS) 正在为下一代BNCT出现,但产生二次马射线.
现有的剂量计在混合场中难以区分马射线与中子.

研究的目的:

开发一种方法,在混合中子-辐射场内隔离玛射线测量.
提高马射线检测的灵敏度,特别是对于低能马射线 (∼100 keV).
为了实现使用ABNS的BNCT应用程序的准确剂量测量.

主要方法:

使用光玻璃剂量计 (RPLGD) 进行辐射检测.
提出并改进了一种过方法,包括一个特殊形状的过器,以区分玛射线信号.
用马射线源和核燃料储存室进行理论计算和实验验证.

主要成果:

特殊形状的过方法表明对低能马射线的灵敏度有所提高.
理论计算表明,对于已知的马射线光谱,可以估计高达10 MeV的空气剂量率.
实验结果证实了过方法在混合辐射环境中的有效性.

结论:

开发的过方法有效地分离了混合中子-场中的马射线测量.
这种技术提高了BNCT的剂量计的准确性,特别是在ABNS.
该方法在复杂的辐射环境中显示出可靠的马射线评估的前景.

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