Sign on

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (22) (Citation History)
· Refereed Citations to the Article
· Reads History
·
· Translate This Page
Title:
Collisional excitation of interstellar molecules - Deuterated water, HDO
Authors:
Green, Sheldon
Affiliation:
AA(NASA, Goddard Space Flight Center, Greenbelt, MD)
Publication:
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 70, Aug. 1989, p. 813-831. (ApJS Homepage)
Publication Date:
08/1989
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Deuterium, Interstellar Matter, Molecular Excitation, Water, Helium Atoms, Infrared Spectra, Millimeter Waves, Molecular Collisions, Molecular Rotation, Tables (Data), Transition Probabilities
DOI:
10.1086/191358
Bibliographic Code:
1989ApJS...70..813G

Abstract

Using an accurate theoretical interacting potential and coupled-channel molecular scattering calculations, excitation rates for deuterated water (HDO) in collisions with He atoms were computed. Data are presented for rates among the 34 rotational levels with energy below 400/cm for temperatures between 50 and 500 K. Excitation rate constants were determined using data from fixed energy cross sections averaged over thermal (Boltzmann) distributions of collision energies. Based on the agreement (for H2O) of rates from two different theoretical potentials and on agreement with the limited experimental data, the larger rates for HDO were estimated to be generally accurate to better than 50 percent.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences



More Article Retrieval Options

HELP for Article Retrieval


Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

  New!

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints