Jingkang Wang , Chenger Wang , Yufeng Tong , Huanyin Li , Jian Shi , Guohao Ren , Xilei Sun , Yuntao Wu
{"title":"6LiF 和 6LiCl 共掺对 NaI:Tl 单晶闪烁体伽马和中子探测性能的影响","authors":"Jingkang Wang , Chenger Wang , Yufeng Tong , Huanyin Li , Jian Shi , Guohao Ren , Xilei Sun , Yuntao Wu","doi":"10.1016/j.radmeas.2024.107232","DOIUrl":null,"url":null,"abstract":"<div><p>NaI:Tl single crystals codoped with <sup>6</sup>LiI have been considered as promising neutron-gamma scintillators due to low cost, scalability, and high efficiency in detecting and discriminating neutrons and gamma-rays. This study aims to study the effects of <sup>6</sup>LiF and <sup>6</sup>LiCl codoping on the NaI:Tl single crystals grown by the multi-ampoule Bridgman method. The impact of <sup>6</sup>LiF and <sup>6</sup>LiCl on the optical properties, gamma spectroscopy, and pulse shape discrimination (PSD) of neutron and gamma detection performance were analyzed. Both ⁶LiF and ⁶LiCl caused a decrease in gamma-ray light yield and a deterioratrion of energy resolution with increasing codoping concentrations, similar to the scenarios of ⁶LiI codoping. Nonetheless, for NaI:Tl,<sup>6</sup>LiF, the light yield and PSD Figure-of-Merit (FoM) are almost unchanged about 37,500 photons/MeV and 4.6 when the Li content reaches 2 at%, which is better than the scenario of <sup>6</sup>LiI codoping. Combing with the advantages of non-hygroscopic nature of LiF and a higher utilization yield of Li element in LiF comparing with LiI, NaI:Tl,<sup>6</sup>LiF single crystals could be regarded as more cost-effective scintillators for neutron detection applications.</p></div>","PeriodicalId":21055,"journal":{"name":"Radiation Measurements","volume":null,"pages":null},"PeriodicalIF":1.6000,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of 6LiF and 6LiCl codoping on gamma and neutron detection performance of NaI:Tl single crystal scintillators\",\"authors\":\"Jingkang Wang , Chenger Wang , Yufeng Tong , Huanyin Li , Jian Shi , Guohao Ren , Xilei Sun , Yuntao Wu\",\"doi\":\"10.1016/j.radmeas.2024.107232\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>NaI:Tl single crystals codoped with <sup>6</sup>LiI have been considered as promising neutron-gamma scintillators due to low cost, scalability, and high efficiency in detecting and discriminating neutrons and gamma-rays. This study aims to study the effects of <sup>6</sup>LiF and <sup>6</sup>LiCl codoping on the NaI:Tl single crystals grown by the multi-ampoule Bridgman method. The impact of <sup>6</sup>LiF and <sup>6</sup>LiCl on the optical properties, gamma spectroscopy, and pulse shape discrimination (PSD) of neutron and gamma detection performance were analyzed. Both ⁶LiF and ⁶LiCl caused a decrease in gamma-ray light yield and a deterioratrion of energy resolution with increasing codoping concentrations, similar to the scenarios of ⁶LiI codoping. Nonetheless, for NaI:Tl,<sup>6</sup>LiF, the light yield and PSD Figure-of-Merit (FoM) are almost unchanged about 37,500 photons/MeV and 4.6 when the Li content reaches 2 at%, which is better than the scenario of <sup>6</sup>LiI codoping. Combing with the advantages of non-hygroscopic nature of LiF and a higher utilization yield of Li element in LiF comparing with LiI, NaI:Tl,<sup>6</sup>LiF single crystals could be regarded as more cost-effective scintillators for neutron detection applications.</p></div>\",\"PeriodicalId\":21055,\"journal\":{\"name\":\"Radiation Measurements\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2024-07-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Radiation Measurements\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S135044872400180X\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"NUCLEAR SCIENCE & TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiation Measurements","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S135044872400180X","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}
Effects of 6LiF and 6LiCl codoping on gamma and neutron detection performance of NaI:Tl single crystal scintillators
NaI:Tl single crystals codoped with 6LiI have been considered as promising neutron-gamma scintillators due to low cost, scalability, and high efficiency in detecting and discriminating neutrons and gamma-rays. This study aims to study the effects of 6LiF and 6LiCl codoping on the NaI:Tl single crystals grown by the multi-ampoule Bridgman method. The impact of 6LiF and 6LiCl on the optical properties, gamma spectroscopy, and pulse shape discrimination (PSD) of neutron and gamma detection performance were analyzed. Both ⁶LiF and ⁶LiCl caused a decrease in gamma-ray light yield and a deterioratrion of energy resolution with increasing codoping concentrations, similar to the scenarios of ⁶LiI codoping. Nonetheless, for NaI:Tl,6LiF, the light yield and PSD Figure-of-Merit (FoM) are almost unchanged about 37,500 photons/MeV and 4.6 when the Li content reaches 2 at%, which is better than the scenario of 6LiI codoping. Combing with the advantages of non-hygroscopic nature of LiF and a higher utilization yield of Li element in LiF comparing with LiI, NaI:Tl,6LiF single crystals could be regarded as more cost-effective scintillators for neutron detection applications.
期刊介绍：
The journal seeks to publish papers that present advances in the following areas: spontaneous and stimulated luminescence (including scintillating materials, thermoluminescence, and optically stimulated luminescence); electron spin resonance of natural and synthetic materials; the physics, design and performance of radiation measurements (including computational modelling such as electronic transport simulations); the novel basic aspects of radiation measurement in medical physics. Studies of energy-transfer phenomena, track physics and microdosimetry are also of interest to the journal.
Applications relevant to the journal, particularly where they present novel detection techniques, novel analytical approaches or novel materials, include: personal dosimetry (including dosimetric quantities, active/electronic and passive monitoring techniques for photon, neutron and charged-particle exposures); environmental dosimetry (including methodological advances and predictive models related to radon, but generally excluding local survey results of radon where the main aim is to establish the radiation risk to populations); cosmic and high-energy radiation measurements (including dosimetry, space radiation effects, and single event upsets); dosimetry-based archaeological and Quaternary dating; dosimetry-based approaches to thermochronometry; accident and retrospective dosimetry (including activation detectors), and dosimetry and measurements related to medical applications.
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