论文标题
腹中氢碰撞中的非弹性过程及其对非LTE计算的影响
Inelastic processes in strontium-hydrogen collisions and their impact on non-LTE calculations
论文作者
论文摘要
低能量SR + H，SR $^ + $ + H $^ - $，SR $^ + $ + H和SR $^{2 +} $ + H $^ - $ collisions使用多冰川量子量子模型方法计算得出的非弹性流程速率系数。考虑了31个SRH $^+$的散射通道和SRH的17个散射通道。因此，对于1202个部分过程计算了部分横截面和部分速率系数。使用用于SR II + H I碰撞的新量子数据，我们更新了SR II的模型原子，并进行了非本地热力学平衡（非LTE）计算。我们在两个模型大气中为SR II共振线提供了非LTE丰度校正，这些谐音适用于非常金属罚款（[Fe/H] $ \ le -2 $）矮人和巨人。
Inelastic processes rate coefficients for low-energy Sr + H, Sr$^+$ + H$^-$, Sr$^+$ + H and Sr$^{2+}$ + H$^-$ collisions are calculated using multichannel quantum model approach. 31 scattering channels of SrH$^+$ and 17 scattering channels of SrH are considered. The partial cross sections and the partial rate coefficients are hence calculated for 1202 partial processes in total. Using new quantum data for Sr II + H I collisions, we updated model atom of Sr II and performed the non-local thermodynamic equilibrium (non-LTE) calculations. We provide the non-LTE abundance corrections for the Sr II resonance lines in two grids of model atmospheres, which are applicable to very metal-poor ([Fe/H] $\le -2$) dwarfs and giants.
