The formation of SiH+, PH+, and SH+ by radiative association
Physics Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6372, U.S.A. e-mail: email@example.com
2 Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996-1200, U.S.A.
3 Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138, U.S.A. e-mail: firstname.lastname@example.org
4 Theoretische Chemie, Bergische Universität-Gesamthochschule Wuppertal, Gaußstr. 20, D-42097 Wuppertal, Germany e-mail: email@example.com, firstname.lastname@example.org
5 Department of Chemistry, Indian Institute of Technology, Kharagpur 721 302, India
Send offprint request to: P.C. Stancil
Accepted: 23 November 1999
Cross sections for the radiative association of Si+, P+, and S+ with atomic hydrogen to form the diatomic molecular ions SiH+, PH+, and SH+, respectively, are presented. The results are obtained using fully quantum-mechanical techniques and utilize ab initio molecular data calculated with the multireference single- and double-excitation configuration-interaction (MRD-CI) method. Thermal rate coefficients are presented and applications of the results to diffuse interstellar clouds are discussed.
Key words: molecular processes / ISM: molecules
© European Southern Observatory (ESO), 2000