Rotational quenching of HD induced by collisions with H2 molecules

Yier Wan, N. Balakrishnan, B. H. Yang, R. C. Forrey, P. C. Stancil

Research output: Contribution to journalArticle

Abstract

Rate coefficients for rotational transitions in HD induced by H2 impact for rotational levels of HD j ≤ 8 and temperatures 10 K ≤ T ≤ 5000 K are reported. The quantum mechanical close-coupling (CC) method and the coupled-states (CS) decoupling approximation are used to obtain the cross-sections employing the most recent highly accurate H2–H2 potential energy surface (PES). Our results are in good agreement with previous calculations for low-lying rotational transitions The cooling efficiency of HD compared with H2 and astrophysical applications are briefly discussed.

Original languageEnglish (US)
Pages (from-to)381-386
Number of pages6
JournalMonthly Notices of the Royal Astronomical Society
Issue number1
DOIs
StatePublished - Sep 1 2019

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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