| Al2O3:C、LiF:Mg,Ti、LiF:Mg,Cu,P对本底辐射的热释光响应比较 |
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| 引用本文： | 陈劲民,李永强,熊正烨,王文华,封余军,黄存友,汤照,师文庆.Al2O3:C、LiF:Mg,Ti、LiF:Mg,Cu,P对本底辐射的热释光响应比较[J].核技术,2012(2):109-112. |
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| 作者姓名： | 陈劲民 李永强 熊正烨 王文华 封余军 黄存友 汤照 师文庆 |
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| 作者单位： | 广东海洋大学理学院 |
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| 基金项目： | 湛江市科技攻关项目;广东海洋大学科研基金资助 |
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| 摘 要： | 用Al2O3:C、LiF:Mg,Ti、LiF:Mg,Cu,P热释光剂量计(TLD)测量湛江市区本底辐射的热释光响应,以选取适合低辐射场辐射剂量测量的TLD。它们的最低响应剂量依次为Al2O3:C(1–2μGy)、LiF:Mg,Cu,P(约2μGy)和LiF:Mg,Ti(>10μGy)。Al2O3:C的热释光峰温较低,对较长时间段(>30 d)的累积剂量,存在较明显的热释光衰退,剂量响应曲线偏离线性;LiF:Mg,Cu,P和LiF:Mg,Ti的发光峰温较高,数年内都很稳定。综合考虑灵敏度和稳定性,LiF:Mg,Cu,P更宜于低辐射场的累积剂量测量。
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| 关 键 词： | 热释光 本底辐射 Al2O3 LiF |
Thermoluminescence comparison among Al2O3:C, LiF:Mg,Ti and LiF:Mg,Cu,P for natural radiation background measurement |
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| CHEN Jingmin,LI Yongqiang,XIONG Zhengye,WANG Wenhua,FENG Yujun,HUANG Cunyou,TANG Zhao,SHI Wenqing.Thermoluminescence comparison among Al2O3:C, LiF:Mg,Ti and LiF:Mg,Cu,P for natural radiation background measurement[J].Nuclear Techniques,2012(2):109-112. |
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| Authors: | CHEN Jingmin LI Yongqiang XIONG Zhengye WANG Wenhua FENG Yujun HUANG Cunyou TANG Zhao SHI Wenqing |
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| Affiliation: | (School of Science,Guangdong Ocean University,Zhanjiang 524088,China) |
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| Abstract: | To select thermoluminescent dosimeters(TLDs) for low radiation research,thermoluminescence responses of Al2O3:C,LiF:Mg,Ti and LiF:Mg,Cu,P were measured under natural radiation background in Zhanjiang city,China.TL sensitivity of the three TLDs,in terms of the threshold dose,is sequenced as Al2O3:C(1~2 μGy),LiF:Mg,Cu,P(about 2 μGy),and LiF:Mg,Ti(>10 μGy).However,as the temperature of glow peak of Al2O3:C is not so high,its TL decays in a relatively long period,hence the non-linearity of the TL dose response curve of Al2O3:C,while temperatures of glow peaks of LiF:Mg,Ti and LiF:Mg,Cu,P are higher,hence their linear TL dose response.Therefore,LiF:Mg,Cu,P is the best TLD for low radiation cumulative dose detection. |
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| Keywords: | Thermoluminescence(TL) Natural background radiation Al2O3 LiF |
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