Observation of the AiXr band system of SO+ in a rotationally cold supersonic expansion

Abstract
Rotationally cold emission has been recorded in the A 2ΠiX 2Πr band system of SO+ at a resolution of 0.3 cm1 using a source consisting of a supersonic expansion excited by a corona discharge, and the observed spectra have been rotationally analyzed. The derived constants have been merged with those obtained from previously published spectra of SO+ as well as from new analyses of unpublished high resolution measurements. Derived constants for this band system are reported for 60 bands involving v‘=0 through 10 and v’=0 through 11.