第17讲_非均匀加宽、爱因斯坦三种辐射系数的修正

1、01/1/zzVcVc01/zvvVc1/zVc00021/1/1/1/zzzzVcVcVcVc01/zVc01/zVc21222zmVKTzzzzmdn Vn VdVnedVKT2212222212211122zzmVKTzzzzmVKTzzzzmdn Vn VdVnedVKTmdn Vn VdVnedVKT001/zVc220020220020122202002001221010010022mcKTmcKTcmdnndnedKTcmdnndnedKTn2、n1按中心频率的分布20100021,Dnngnn2020010100,DDnn gnn g2200202200201222020020

2、01221010010022mcKTmcKTcmdnndnedKTcmdnndnedKT220020122000,2mcKTDcmgeKT2210Pn A h 022102120,DPdhnA dhA n gd 0,/DgPP 2202012200,2mcKTDcmgeKT 2202012200,2mcKTDcmgeKT 12000,2DcmgKT 120222ln2DKTmc12202112270024ln22ln222ln27.16 10DDDDgeKTTmcM M为分子量0,1Dgd 即满足归一化条件221Ph n A000d2002000,Dndn gd2000210,DHh n gd

3、A gd 处于处于0附近的原子数附近的原子数均匀加宽线型均匀加宽线型 2002100,DHPddh n gA gd 0 02210000,DHPhn Aggd 00000,DHgggd HD 000000,DHDgggdg DH 00,Hgg 21221dnPhn A hdt 02210221,PPgn A h gn h A 21210,AA g 3212102103,8cBA gB gh 12120,BB g 同理212122121221212121121(1)(2)(3)spststdnA ndtdnW nBndtdnW nBndt 212212210221,spdnn Adn Agdn

4、Adt 212212210121121120,ststdnn Wdn BgddtdnnWdn Bgddt 212210,stdnn B gddt 02210,n Bgd 0221n B在范围内都可以认为= 002210,n B gd 012112stdnn Bdt0,g 0,g dd 21221221022102210,stdnn Wdn Bgddtn Bgdn B g 121012,stdnn gBdt 同理lN h3212138vBAh 238vn12An h黑体单位黑体单位体积中频体积中频率率附近附近单位频率单位频率间隔中的间隔中的模式数模式数vc工作物质工作物质内的光速内的光速2121210210,llAWBgNNn22211221012011,llggAWWgNNggnv 221210020,8vAg 22211200210,8vgAgg 221212204Hv A 221213/220ln24DAvllnNV21021,lA gWnn V 21021,llA gWann