期刊
PHYSICAL REVIEW A
卷 83, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.83.052712
关键词
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资金
- Triangle de la Physique [QCCM-2008-007T]
- National Science Foundation [PHY-0855622]
- Direct For Mathematical & Physical Scien
- Division Of Physics [0855622, 1068785] Funding Source: National Science Foundation
We develop the theory of radiative association of an atom and a diatomic molecule within a close-coupling framework. We apply it to the formation of H-3(-) after the low-energy collision (below 0.5 eV) of H-2 with H-. Using recently obtained potential energy and permanent dipole moment surfaces of H-3(-), we calculate the lowest rovibrational levels of the H-3(-) electronic ground state and the cross section for the formation of H-3(-) by radiative association between H- and ortho- and para-H-2. We discuss the possibility for the H-3(-) ion to be formed and observed in the cold and dense interstellar medium in an environment with a high ionization rate. Such an observation could be a probe for the presence of H- in the interstellar medium.
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