Molecular collision processes. II - Excitation of the fine-structure transition of C/+/ in collisions with H2
Molecular collision processes. II - Excitation of the fine-structure transition of C/+/ in collisions with H2
复制标题
分子碰撞过程。
DOI：
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发表时间：
1977
期刊：
影响因子：
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通讯作者：
J. Launay
中科院分区：
文献类型：
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作者：
D. Flower;J. Launay
对于 pt.I，参见同上，第 10 卷，第 18 号，第 3665 页（1977 年）。对 C+ 离子与对位和邻位 H2 之间的碰撞进行了量子力学计算，以确定热能下 C+ 2p1P12/0-2P32/0 精细结构转变的横截面。在长范围内，相互作用势是从通常的微扰理论展开中得出的，而在短范围内，则是从势能曲线的可用计算中得出的。研究了与 H2 分子的激发旋转态耦合的影响。将10<或=T<或=250K温度范围内相应的精细结构冷却速率系数制成表格，用于星际介质热平衡研究。
For pt.I see ibid., vol.10, no.18, p.3665 (1977). Quantum-mechanical calculations of collisions between C+ ions and para- and ortho-H2 have been performed in order to determine the cross section for the C+ 2p1P12/0-2P32/0 fine-structure transition at thermal energies. The interaction potential, at long range, is derived from the usual perturbation theory expansions and, at short range, from available computations of the potential energy curves. The effects of coupling to excited rotational states of the H2 molecule are investigated. The corresponding fine-structure cooling rate coefficients are tabulated over the temperature range 10<or=T<or=250K for application to studies of the thermal balance of the interstellar medium.