{"title":"使用 MCNPX 对 N 型和 P 型同轴 Ge 探测器进行建模以及死层变化对其响应函数的影响","authors":"R.A. El-Tayebany, Mohamed Ali, Nawal Mohames, Rania Mohamed","doi":"10.1115/1.4065395","DOIUrl":null,"url":null,"abstract":"\n This study assessed the response function of a p-type and n-type coaxial high-purity germanium (HPGe) detector via Monte Carlo simulations. MCNPX was employed to model the Coaxial Ge detectors, and for a precise simulation, the dimensions of the dead layer of germanium crystals were added. The dead layer was separated into front and lateral surfaces, and the thickness of each dead layer was modeled. In this work, the simulated detectors have been performed at different energy lines using a radioactive source Eu-152 to study the response function of each with dead layer variations for the front dead layer and study the range of relative deviation of the Monte Carlo simulation outputs from the manufactured declared data. The results proved that the n-type coaxial high-purity germanium (HPGe) detector is more sensitive to the dead layer change than p-type with a thick change by 0.02 mm. This research has significant effects on the efficiencies of the radiation detection systems in the energy range ~ (120-1410) KeV.","PeriodicalId":16756,"journal":{"name":"Journal of Nuclear Engineering and Radiation Science","volume":null,"pages":null},"PeriodicalIF":0.5000,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Modeling of N and P-type of Coaxial Ge Detectors Using MCNPX and the Effect of Dead Layer Variation on Its Response Function\",\"authors\":\"R.A. El-Tayebany, Mohamed Ali, Nawal Mohames, Rania Mohamed\",\"doi\":\"10.1115/1.4065395\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\\n This study assessed the response function of a p-type and n-type coaxial high-purity germanium (HPGe) detector via Monte Carlo simulations. MCNPX was employed to model the Coaxial Ge detectors, and for a precise simulation, the dimensions of the dead layer of germanium crystals were added. The dead layer was separated into front and lateral surfaces, and the thickness of each dead layer was modeled. In this work, the simulated detectors have been performed at different energy lines using a radioactive source Eu-152 to study the response function of each with dead layer variations for the front dead layer and study the range of relative deviation of the Monte Carlo simulation outputs from the manufactured declared data. The results proved that the n-type coaxial high-purity germanium (HPGe) detector is more sensitive to the dead layer change than p-type with a thick change by 0.02 mm. This research has significant effects on the efficiencies of the radiation detection systems in the energy range ~ (120-1410) KeV.\",\"PeriodicalId\":16756,\"journal\":{\"name\":\"Journal of Nuclear Engineering and Radiation Science\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.5000,\"publicationDate\":\"2024-04-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Nuclear Engineering and Radiation Science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1115/1.4065395\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"NUCLEAR SCIENCE & TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Nuclear Engineering and Radiation Science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1115/1.4065395","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
摘要
本研究通过蒙特卡洛模拟评估了 p 型和 n 型同轴高纯锗(HPGe)探测器的响应函数。采用 MCNPX 对同轴锗探测器进行建模,并添加了锗晶体死层的尺寸以实现精确模拟。死层被分为正面和侧面,每个死层的厚度都被建模。在这项工作中,利用放射源 Eu-152 在不同的能量线对模拟探测器进行了测试,以研究每个探测器的响应函数与前死层的死层变化,并研究蒙特卡罗模拟输出与制造申报数据的相对偏差范围。结果证明,n 型同轴高纯锗(HPGe)探测器对死层变化的敏感度高于厚度变化 0.02 毫米的 p 型探测器。这项研究对能量范围 ~ (120-1410) KeV 的辐射探测系统的效率有重大影响。
Modeling of N and P-type of Coaxial Ge Detectors Using MCNPX and the Effect of Dead Layer Variation on Its Response Function
This study assessed the response function of a p-type and n-type coaxial high-purity germanium (HPGe) detector via Monte Carlo simulations. MCNPX was employed to model the Coaxial Ge detectors, and for a precise simulation, the dimensions of the dead layer of germanium crystals were added. The dead layer was separated into front and lateral surfaces, and the thickness of each dead layer was modeled. In this work, the simulated detectors have been performed at different energy lines using a radioactive source Eu-152 to study the response function of each with dead layer variations for the front dead layer and study the range of relative deviation of the Monte Carlo simulation outputs from the manufactured declared data. The results proved that the n-type coaxial high-purity germanium (HPGe) detector is more sensitive to the dead layer change than p-type with a thick change by 0.02 mm. This research has significant effects on the efficiencies of the radiation detection systems in the energy range ~ (120-1410) KeV.
期刊介绍:
The Journal of Nuclear Engineering and Radiation Science is ASME’s latest title within the energy sector. The publication is for specialists in the nuclear/power engineering areas of industry, academia, and government.