Highly rotationally excited HF collisional quenching

DOI

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.

Identifier
DOI http://doi.org/10.26093/cds/vizier.35780065
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/A+A/578/A65
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/578/A65
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/578/A65
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/A+A/578/A65
Provenance
Creator Yang B.; Walker K.M.; Forrey R.C.; Stancil P.C.; Balakrishnan N.
Publisher CDS
Publication Year 2015
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Interdisciplinary Astronomy; Natural Sciences; Physics