Rotational quenching of HD induced by collisions with H2 molecules
Rotational quenching of HD induced by collisions with H2 molecules
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DOI：
10.1093/mnras/stz1735
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发表时间：
2019-09
影响因子：
4.8
通讯作者：
Y. Wan;N. Balakrishnan;B. Yang;R. C. Forrey;P. Stancil
中科院分区：
文献类型：
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作者：
Y. Wan;N. Balakrishnan;B. Yang;R. C. Forrey;P. Stancil
本文报道了在10 K ≤ T ≤ 5000 K和HD_j ≤ 8转动能级下，由H_2碰撞引起的HD转动跃迁的速率系数。采用量子力学紧耦合（CC）方法和耦合态（CS）退耦近似，采用最新的高精度H2-H2势能面（PES）得到了反应截面.我们的结果与以前的计算结果符合得很好的低位转动过渡HD的冷却效率相比，H2和天体物理应用进行了简要的讨论。
Rate coefficients for rotational transitions in HD induced by H2 impact for rotational levels of HD j ≤ 8 and temperatures 10 K ≤ T ≤ 5000 K are reported. The quantum mechanical close-coupling (CC) method and the coupled-states (CS) decoupling approximation are used to obtain the cross-sections employing the most recent highly accurate H2–H2 potential energy surface (PES). Our results are in good agreement with previous calculations for low-lying rotational transitions The cooling efficiency of HD compared with H2 and astrophysical applications are briefly discussed.