标题： 中子俘获元素的原子数据 III。 Ge、Se、Br、Kr、Rb 和 Xe 低电荷离子的电荷转移速率系数 显示英文标题

标题： Atomic data for neutron-capture elements III. Charge transfer rate coefficients for low-charge ions of Ge, Se, Br, Kr, Rb, and Xe

摘要： 我们提供了低电荷的Ge、Se、Br、Kr、Rb和Xe离子与中性氢反应在温度范围10^2--10^6 K下的总和终态分辨的电荷转移（CT）速率系数。这些元素已被检测到在电离的天体物理星云中，特别是行星状星云中。 CT速率系数是确定总元素丰度所需电离平衡解的关键组成部分，这些丰度是通过观测到的离子丰度确定的。 使用多通道Landau Zener方法计算了电荷为q=2-5的入射离子的速率系数，而对于单电荷离子则采用了Demkov近似。 我们的五次电离物种的结果是下限值，这是由于NIST数据库中能级能量的不完整性。 此外，我们还计算了上述六种中性物种与电离氢之间的电荷转移电离反应的速率系数。 所得的总和状态分辨的CT速率系数已列在表中，并可在CDS获取。 结合我们对光致电离星云中其他重要原子过程的同步研究，这项工作将能够进行关于中子捕获元素丰度和核合成的稳健研究，通过星云光谱学。 显示英文摘要

摘要： We present total and final-state resolved charge transfer (CT) rate coefficients for low-charge Ge, Se, Br, Kr, Rb, and Xe ions reacting with neutral hydrogen over the temperature range 10^2--10^6 K. Each of these elements has been detected in ionized astrophysical nebulae, particularly planetary nebulae. CT rate coefficients are a key ingredient for the ionization equilibrium solutions needed to determine total elemental abundances from those of the observed ions. A multi-channel Landau Zener approach was used to compute rate coefficients for projectile ions with charges q=2-5, and for singly-charged ions the Demkov approximation was utilized. Our results for five-times ionized species are lower limits, due to the incompleteness of level energies in the NIST database. In addition, we computed rate coefficients for charge transfer ionization reactions between the neutral species of the above six elements and ionized hydrogen. The resulting total and state-resolved CT rate coefficients are tabulated and available at the CDS. In tandem with our concurrent investigations of other important atomic processes in photoionized nebulae, this work will enable robust investigations of neutron-capture element abundances and nucleosynthesis via nebular spectroscopy.