氦原子对钠、钾共振线压展宽的理论研究
Theoretical Study of Sodium and Potassium Resonance Lines Pressure Broadened by Helium Atoms
摘要：
我们进行了完全量子力学计算的钠$3s$ - $3p$和钾$4s$ - $4p$共振线的氦扰动气体的影响下的发射和吸收轮廓的二元近似。我们利用精心构造的势能面和跃迁偶极矩计算了158 - 3000 K温度范围内的发射和吸收系数。准束缚态的贡献包括在内。由此得到的红、蓝翼型与以前的理论计算和实验测量结果吻合得很好。
英文摘要：
We perform fully quantum mechanical calculations in the binary approximation of the emission and absorption profiles of the sodium $3s$-$3p$ and potassium $4s$-$4p$ resonance lines under the influence of a helium perturbing gas. We use carefully constructed potential energy surfaces and transition dipole moments to compute the emission and absorption coefficients at temperatures from 158 to 3000 K. Contributions from quasi-bound states are included. The resulting red and blue wing profiles agree well with previous theoretical calculations and with experimental measurements.
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