Rotational excitation and de-excitation of HF molecules by He atoms

Details Rotational excitation and de-excitation of HF molecules by He atoms Rotational excitation and de-excitation of HF molecules by He atoms

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005a%26a...430.1139r&link_type=abstract

Astronomy and Astrophysics, v.430, p.1139-1142 (2005)

Astronomy and Astrophysics

Astrophysics

14

Molecular Data, Molecular Processes, Ism: Molecules, Ism: Abundances, Astrochemistry

Scientific paper

We report Close Coupling calculations of the rotational transitions induced in collisions between HF molecules and He atoms. We consider transitions for levels up to J=9 and for temperatures up to 300 K. We use a new global 3D potential energy surface which we proposed recently and is the best available at the moment. This surface exhibits two minima associated both with linear geometries (V=-43.70 cm-1 for He-HF and V=-25.88 cm-1 for He-FH). Close Coupling calculations are performed in the collision energy 10-6 to 2000 cm-1 interval. Our results validate the estimate, by Neufeld et al., of the abundance of HF in the interstellar medium which was detected recently.
Tables 1 and 2 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/430/1139

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