氧化铝和石英颗粒对α射线的热释光响应  

TL response to quartz and aluminum oxide grain for α-irradiation

作　　者：潘宝林[1] 魏明建[1] 李东旭[1] 刘兆文[1] 刘超[1] 赵世元[1] 

机构地区：[1]首都师范大学光断代实验室,北京100048

出　　处：《核技术》2009年第2期113-115,共3页Nuclear Techniques

基　　金：国家自然科学基金(40871017);北京市教委科技计划基金(KZ200810028015)重点项目资助

摘　　要：用剂量传递法对十孔α源进行标定。用粒径为<4μm、4–11μm、11–40μm、40–74μm和74–100μm的石英颗粒,先接受2.0Gyγ源照射,再接受不同剂量的α射线照射,测定它们的热释光响应特征。实验结果表明:α射线对粒径为40μm以上的石英颗粒透过性较差,粒径<4μm与11–40μm的石英颗粒对α射线的释光响应最好。本实验还比较了粒径范围为11–40μm的石英与氧化铝对α射线的热释光响应,结果表明:氧化铝(330℃)比石英(375℃)对α射线的释光响应好。Thermoluminescence （TL） response for an α-ray irradiation system （^241Am） was examined with quartz grains of 11-40um. Quartz grains of different sizes, i.e. 〈4um, 4-11 um, 11-40um, 40-74um and 74-100um, were irradiated to 2.0 Gy by γ-rays （^137Cs）, before they were irradiated to different doses by the α-ray irradiation system. TL response to the quartz grain samples was measured, TL response of the quartz grains smaller than 4 um and 11--40 um to α-ray irradiation is the best, as the α-rays cannot penetrate quartz grains larger than 40 um The TL response characteristic is related with quartz grain surface area. TL responses to α-irradiation of 11-40 um quartz and aluminum oxide grains were compared. The e-irradiation TL response of aluminum oxide （330℃） is better than the quartz （375℃）.

关 键 词：石英颗粒 α射线 热释光响应 氧化铝 

分 类 号：O482.31[理学—固体物理]