【作者】 张宏宇； 刘德坤； 张中帅； 张丽红； 卜香云； 谷德山；

【Author】 ZHANG Hong-yu,LIU De-kun,ZHANG Zhong-shuai, ZHANG Li-hong,BU Xiang-yun,GU De-shan (Phsics School of Northeast Normal University,Changchun of Jilin Prov.130024,China)

【机构】 东北师范大学物理学院；

【摘要】 氚是纯β射线辐射体,利用其在衰变时放出的β粒子可激活发光材料进行发光。目前常用的发光材料有Ⅱ-Ⅵ族化合物和稀土化合物,研制的长寿命光源发光颜色主要和所选用的发光材料有关,通过实验确定发红光的发光粉为硫氧钇铕;发绿光的发光粉为硫化锌铜,铝;发蓝光的发光粉为硫化锌银。制作长寿命发光粉,可将氚气在高真空、高温条件下直接吸入到某种发光粉中,或将氚先吸附到吸氚效率高的吸气材料中,采用研磨技术再将吸氚材料掺杂到发光粉中;管状氚光源制作采用旋转涂屏法将发光粉先涂到玻璃壳体内,在高真空环境下充入一定数量氚气后封离真空系统。研制的长寿命发光粉可用来做各种发光涂层,长寿命光源可用来做各种指示,使用寿命可长达10年以上。由于氚放出的β射线易于防护,使用安全可靠。更多还原

【Abstract】 Tritium is a common nuclear material,The gaseous tritium is pure beta ray source.This paper presents the β -ray source of tritium,by which activating the phosphors to shine.Compared by experiment to determine the common phosphors, red light phosphor is Y₂O₂S:Eu;green light phosphor is ZnS:Cu,Al;blue light phosphor is ZnS:Ag.Developing the long life phosphors,which inhaling the tritium in the condition of microvacuum and high temperature.Developing the tritium light source with glass tube that whirl smeared the phosphors and filled with tritium.At last the vacuum system be sealed off after the tritium is filled.The tritium light source have two main advantages:its useful life over ten years and could incandescence without extra external power-driven,so it can be used for indication and security.更多还原