Rate coefficients for electron impact excitation of S xv

Autor:	Y. Itikawa, E. Kimura, W. Eissner, S. Nakazaki
Rok vydání:	1999
Předmět:	Physics Polynomial Excited state General Physics and Astronomy Function (mathematics) Atomic physics Atmospheric temperature range Collision Electron ionization Excitation Atomic data
Zdroj:	Astronomy and Astrophysics Supplement Series. 139:167-171
ISSN:	1286-4846 0365-0138
DOI:	10.1051/aas:1999386
Popis:	Collision strengths for electron impact excitation of S xv are calculated in a close-coupling approach. The nineteen lowest LS states are included in the calculation. Rate coefficients are obtained for transitions from the ground 1s2 1 S0 state to the fine-structure levels of all excited states of 1s2 () and 1s3 () configurations. The resulting effective collision strengths are fitted to a polynomial function of K), and rate coefficients are presented in the temperature range between K and K.
Databáze:	OpenAIRE
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