Absorption spectrum of CS2 in the region from 600 to 1015 Å

Abstract

The absorption spectrum of CS2 in the wavelength region from 600 to 1015 Å has been reinvestigated. In addition to the Rydberg series, III to VIII, found by Tanaka et al., many new Rydberg series were observed, especially in the region from 940 to 1015 Å. Two new series consisting of seven vibrational series with doublet bands have been identified. The convergence limits of these series (12.59 to 13.02 eV) correspond probably to the first excited 2Πu state of CS2+. Series III, IV, and III′ (new series) converging to 14.47 eV are accompanied by weak bands at the longer wavelength side with a separation of about 40 cm−1. It was found that series V also is accompanied by a weak band 40 cm−1 on the longer wavelength side of its own individual bands. A new series, V′, converging to the same limit as series V (16.19 eV) was also identified. There are two series converging to the limit at 19.38 eV, one of which is a new one, IX, and this value of the limit is smaller by 0.12 eV (1070 cm−1) than the previous value reported by Tanaka et al.