最简单稳定负分子离子H3 -在星际介质中的形成
Formation of the simplest stable negative molecular ion H3- in interstellar medium
摘要：
本文提出了原子和分子的辐射缔合理论，并将其应用于（H $_2$ -H $^-$）范德华络合物。讨论了在星际介质中存在大量电离氢分子H $_2^+$的环境中形成H $_3^-$离子的可能性。对H $_3^-$的观测也将是对H $^-$在星际介质中存在的探测。通过计算H $_3^-$离子的电子结构，确定了它的偶极矩、束缚态、转动常数、预离解振动共振态及其寿命，并提出了一种在星际介质中探测H $_3^-$离子的方法.
英文摘要：
We present the theory of radiative association of atoms and molecules, and we apply it to the (H$_2$-H$^-$) van der Waals complex. We discuss the possibility for the H$_3^-$ ion to be formed in the interstellar medium in an environment with abundant ionized molecular hydrogen H$_2^+$. The observation of H$_3^-$ would also be a probe for the presence of H$^-$ in the interstellar medium. By computing the electronic structure of the H$_3^-$ ion, we determine its dipole moment, bound states, rotational constants, predissociated vibrational resonances and their lifetimes, and suggest a way to detect the ion in the interstellar medium.
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