Highly rotationally excited HF collisional quenching Virtual Observatory Resource

Authors
  1. Yang B.
  2. Walker K.M.
  3. Forrey R.C.
  4. Stancil P.C.
  5. Balakrishnan N.
  6. Published by
    CDS
Abstract

Collisional excitation rate coefficients play an important role in the dynamics of energy transfer in the interstellar medium. In particular, accurate rotational excitation rates are needed to interpret microwave and infrared observations of the interstellar gas for nonlocal thermodynamic equilibrium line formation. Theoretical cross sections and rate coefficients for collisional deexcitation of rotationally excited HF in the vibrational ground state are reported. The quantum-mechanical close-coupling approach implemented in the nonreactive scattering code MOLSCAT was applied in the cross section and rate coefficient calculations on an accurate 2D HF-He potential energy surface. Estimates of rate coefficients for H and H_2_ colliders were obtained from the HF-He collisional data with a reduced-potential scaling approach.

Keywords
  1. atomic-physics
Bibliographic source Bibcode
2015A&A...578A..65Y
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/578/A65
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/578/A65
Document Object Identifer DOI
doi:10.26093/cds/vizier.35780065

Access

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http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/578/A65
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History

2015-06-05T08:20:19Z
Resource record created
2015-06-05T08:20:19Z
Created
2015-10-01T16:19:48Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr