Rate coefficients for electron impact excitation of S xv

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.