Rotational quenching of HD induced by collisions with H2 molecules

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

doi:10.1093/mnras/stz1735

Rotational quenching of HD induced by collisions with H₂ molecules

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

Division of Science (Berks)

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

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 language	English (US)
Pages (from-to)	381-386
Number of pages	6
Journal	Monthly Notices of the Royal Astronomical Society
Issue number	1
DOIs	https://doi.org/10.1093/mnras/stz1735
State	Published - Sep 1 2019

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/mnras/stz1735

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title = "Rotational quenching of HD induced by collisions with H2 molecules",

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.",

author = "Yier Wan and N. Balakrishnan and Yang, {B. H.} and Forrey, {R. C.} and Stancil, {P. C.}",

note = "Funding Information: This research used resources of the Georgia Advanced Computing Resource Center, the UNLV National Supercomputing Institute, and the Center for Simulational Physics of The University of Georgia. This work was funded by NASA HST Grant HST-AR-13899, NSF PHY-1806334 (NB), and NSF PHY-1806180 (RCF). We thank Konrad Patkowski for providing his H2–H2 PES. Publisher Copyright: {\textcopyright} 2019 The Author(s).",

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doi = "10.1093/mnras/stz1735",

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T1 - Rotational quenching of HD induced by collisions with H2 molecules

AU - Wan, Yier

AU - Balakrishnan, N.

AU - Yang, B. H.

AU - Forrey, R. C.

AU - Stancil, P. C.

N1 - Funding Information: This research used resources of the Georgia Advanced Computing Resource Center, the UNLV National Supercomputing Institute, and the Center for Simulational Physics of The University of Georgia. This work was funded by NASA HST Grant HST-AR-13899, NSF PHY-1806334 (NB), and NSF PHY-1806180 (RCF). We thank Konrad Patkowski for providing his H2–H2 PES. Publisher Copyright: © 2019 The Author(s).

PY - 2019/9/1

Y1 - 2019/9/1

N2 - 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.

AB - 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.

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Rotational quenching of HD induced by collisions with H₂ molecules

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