Title

Collisional Quenching of Highly Excited H2 due to H2 Collisions

Document Type

Article

Publication Date

7-31-2018

Publication Title

Astrophysical Journal

Volume

862

Issue

2

First page number:

1

Last page number:

8

Abstract

Rate coefficients for pure rotational quenching in H2(ν 1 = 0, j 1) + H2(ν 2 = 0, j 2) collisions from initial levels of j 1 = 2–31 (j 2 = 0 or 1) to all lower rotational levels are presented. We carried out extensive quantum mechanical close-coupling calculations based on a recently published H2–H2 potential energy surface (PES) developed by Patkowski et al. that has been demonstrated to be more reliable than previous work. Rotational transition cross sections with initial levels of j 1 = 2–14, 18, 19, 24, and 25 were computed for energies ranging from 10−6 to 1000 cm−1, while the coupled-states approximation was adopted from 2000 to 20,000 cm−1... See full text for full abstract.

Keywords

Molecular data; Molecular processes; Scattering

Disciplines

Astrophysics and Astronomy

Language

English

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