ELECTRON IMPACT DISSOCIATION X (1)Sigma(+)(g) -> b (3)Sigma(+)(u) AND EXCITATIONS X (1)Sigma(+)(g) -> a (3)Sigma(+)(g) AND X (1)Sigma(+)(g) -> B (1)Sigma(+)(u) OF MOLECULAR HYDROGEN IN NONTHERMAL ASTROPHYSICAL PLASMAS
- Authors
- Ki, Dae-Han; Jung, Young-Dae
- Issue Date
- Feb-2013
- Publisher
- IOP PUBLISHING LTD
- Keywords
- molecular data; molecular processes; plasmas
- Citation
- ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, v.204, no.2, pp.1 - 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
- Volume
- 204
- Number
- 2
- Start Page
- 1
- End Page
- 8
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/28881
- DOI
- 10.1088/0067-0049/204/2/18
- ISSN
- 0067-0049
- Abstract
- We investigate the electronic transitions X (1)Sigma(+)(g) -> b (3)Sigma(+)(u), X (1)Sigma(+)(g) -> a (3)Sigma(+)(g), and X (1)Sigma(+)(g). B (1)Sigma(+)(u) of molecular hydrogen by studying electron impacts in astrophysical Lorentzian plasmas. Useful fitting formulae for the X (1)Sigma(+)(g) -> b (3)Sigma(+)(u), X (1)Sigma(+)(g) -> a (3)Sigma(+) (g), and X (1)Sigma(+)(g) -> B (1)Sigma(+)(u) excitation cross sections are employed in order to obtain the electronic excitation rate coefficients of H2 as functions of the spectral index and temperature. In low-temperature regions, it is found that the excitation rate coefficients R-b(Sigma)u(3)+, R-a(Sigma)g(3)+, and R-B(Sigma)u(1)+ of H2 in non-Maxwellian plasmas are smaller than those in Maxwellian plasmas. However, in high-temperature regions, the excitation rate coefficients of H2 in non-Maxwellian plasmas are greater than those in Maxwellian plasmas. It is also shown that the X (1)Sigma(+)(g) -> b (3)Sigma(+)(u) excitation rate coefficient is the main contributor in low-temperature regions. In contrast, it is found that the X (1)Sigma(+)(g) -> B (1)Sigma(+)(u) electronic excitation is dominant in high-temperature regions.
- Files in This Item
-
Go to Link
- Appears in
Collections - COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY > DEPARTMENT OF APPLIED PHYSICS > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.