Electron-impact rotational excitation of the carbon monosulphide (CS) molecule

Hemal N. Varambhia, Alexandre Faure*, Karola Graupner, Thomas A. Field, Jonathan Tennyson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)
192 Downloads (Pure)

Abstract

Rotational excitation of the carbon monosulphide (CS) molecule by thermal electron-impact is studied using the molecular R-matrix method combined with the adiabatic-nuclei-rotation (ANR) approximation. Rate coefficients are obtained for electron temperatures in the range 5–5000 K and for transitions involving levels up to J= 40. It is confirmed that dipole allowed transitions (ΔJ= 1) are dominant and that the corresponding rate coefficients exceed those for excitation by neutrals by at least five orders of magnitude. As a result, the present rates should be included in any detailed population model of CS in sources where the electron fraction is larger than ∼10−5, in particular in diffuse molecular clouds and interstellar shocks.
Original languageEnglish
Pages (from-to)1409-1412
Number of pages4
JournalMonthly Notices of the Royal Astronomical Society
Volume403
Issue number3
DOIs
Publication statusPublished - 01 Apr 2010

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Fingerprint

Dive into the research topics of 'Electron-impact rotational excitation of the carbon monosulphide (CS) molecule'. Together they form a unique fingerprint.

Cite this