计算三原子分子辐射缔合截面的新理论方法：应用于N2-H -
New theoretical method for calculating the radiative association cross section of a triatomic molecule: Application to N2-H-
摘要：
本文提出了一种新的理论方法来处理原子与硅藻辐射缔合的时间无关的方法。这种方法是一个适应的驱动方程方法开发的光解。精确地计算了分子的束缚态能量和波函数，并将其用于传播与初始散射波函数的重叠。在本文的第二部分，这种方法被应用到辐射缔合的N_2H-阴离子。本文分析了辐射缔合截面的主要特征，并利用计算的10 K速率系数的大小讨论了N_2H ~-在星际介质中的存在，它可作为N_2和H ~-的示踪剂。
英文摘要：
We present a new theoretical method to treat the atom diatom radiative association within a time independent approach. This method is an adaptation of the driven equations method developed for photodissociation. The bound states energies and wave functions of the molecule are calculated exactly and used to propagate the overlap with the initial scattering wave function. In the second part of this paper, this approach is applied to the radiative association of the N2H- anion. The main features of the radiative association cross sections are analysed and the magnitude of the calculated rate coefficient at 10 Kelvin is used to discuss the existence of the N2H- in the interstellar medium which could be used as a tracer of both N2 and H-.
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