Pressure Broadening of Some He I Lines

[摘要] Quantum statistical approach is adopted for calculating the spectral lineshapes of neutral helium in dense plasmas. Stark broadening of isolated HeI lines 5048 Å (21P−41S), 3889 Å (23S−33P), and 3188Å (23S−43P)is presented. Based on thermodynamic Green's function, the electronic contribution to the shift and width is considered. The participation of ions to the line broadening is treated in a quasistatic approximation, by taking bothquadratic Stark effect and quadrupole interaction into account. The calculated shifts and widths are compared with existing data.

[学科分类] 光谱学