第一章总论 (之二) 电磁辐射与材料的相互 作用
1 第一章 总论 (之二) 电磁辐射与材料的相互 作用
Nature Materials 2012;11:58 Whereas significant achievements have been made in visible persistent phosphors (长余辉),the research and development of persistent phosphors in the NIR region (700-2,500nm,近红外区)are lacking,even though there are growing demands for applications as taggants(示踪物)in night- vision surveillance(监测)and as optical probes in bioimaging
Nature Materials 2012;11:58 2 Whereas significant achievements have been made in visible persistent phosphors (长余辉), the research and development of persistent phosphors in the NIR region (700-2,500 nm,近红外区) are lacking, even though there are growing demands for applications as taggants(示踪物)in nightvision surveillance (监测) and as optical probes in bioimaging
2 3 10s 1min 5min 5min 5min 5min Direct sunlight 400nm495nm 590nm 5min Excited in air Excited insalt water b 24h 120h Nature Materials 2012;11:58 240h h Zn3Ga2Ge2010:0.5%Cr3+ 360h
3 Nature Materials 2012;11:58 Zn3Ga2Ge2O10: 0.5%Cr3+
③ ② 4T(te2) ④ ⑥ 4T(t2e) ⑦ 4T2/2E Electron traps ⑤ ① AA2 Cr3+
4
主要内容 第一节概述 辐射的吸收与发射、辐射的散射、光电离 第二节各类特征谱基础 原子光谱、分子光谱#、光电子能谱#、俄歌电 子能谱、核磁共振 *第三节X射线的产生及其与物质的相互作用 X射线的产生#、X射线与物质的相互作用、X 射线的衰减、X射线的防护 学时 讲授2学时,自学大于6学时
5 主要内容 第一节 概述 辐射的吸收与发射、辐射的散射、光电离 第二节 各类特征谱基础 原子光谱、分子光谱# 、光电子能谱# 、俄歇电 子能谱 、核磁共振 *第三节 X射线的产生及其与物质的相互作用 X射线的产生# 、X射线与物质的相互作用、X 射线的衰减、X射线的防护 学时 讲授2学时,自学大于6学时