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Astron. Astrophys. Suppl. Ser. 139, 167-171

Rate coefficients for electron impact excitation of SXV

E. Kimura1 - S. Nakazaki1 - W.B. Eissner2 - Y. Itikawa3

Send offprint request: S. Nakazaki

Correspondence to:

1 - Department of Materials Science, Faculty of Engineering, Miyazaki University, Miyazaki 889-2192, Japan
2 - Fakultät für Physik und Astronomie, Ruhr-Universität, D-44780 Bochum, Germany
3 - Institute of Space and Astronautical Science, Yoshinodai, Sagamihara 229-8510, Japan

Received February 02; accepted June 28, 1999


Collision strengths for electron impact excitation of SXV 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 1S0 state to the fine-structure levels of all excited states of 1s2$\ell$ ($\ell=0,1$)and 1s3$\ell$ ($\ell=0,1,2$) configurations. The resulting effective collision strengths are fitted to a polynomial function of $\log(T_{\rm e}/$K), and rate coefficients are presented in the temperature range between $1\ 10^6$K and $1\ 10^8$K.

Key words: atomic data

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