探讨晶体离子能级热宽度的理论问题  

Theoretical Research of the Thermal Linewidth of Ionic Energy Levels hi Crystal

作　　者：王涛[1] 王瑞旦[2] 

机构地区：[1]中南大学,湖南长沙410083 [2]湖南师范大学,湖南长沙410012

出　　处：《湖南理工学院学报（自然科学版）》2003年第2期34-36,共3页Journal of Hunan Institute of Science and Technology(Natural Sciences)

摘　　要：对与晶体中3d或4f离子晶场光谱热移位相对应的光谱谱线(锐线)的热加宽进行了研究,在原有的声频支的Raman项、单声子项贡献的基础上,进一步考虑了光频支项的贡献,推导出晶体中离子能级热宽度的计算公式。The thermal shift of crystal - field spectra of 3d or 4f ions have been a great many investigations. In this paper we have studied the thermal broadening of the energy spectra(sharp lines) in crystal corresponding with the thermal shift of spectra. We will derive new expression for thermal linewidth of ionic energy levels in crystal further taking into account the contribution of optical - branch term to thermal linewidth, on the base about the contributions of Raman term and single - phonon term of acoustic branches.

关 键 词：热宽度 跃迁几率 Raman项 单项子项 光频支项 

分 类 号：O433.2[机械工程—光学工程]