ABSORPTION-SPECTRUM OF THE H2S MOLECULE IN THE VACUUM ULTRAVIOLET REGION

The optical absorption spectrum of the H//2S molecule in the region from 2050 to 1150 A has been studied by a photographic method, using the radiation from a 1. 3-GeV electron synchrotron as a background source. Numerous bands including those due to dipole forbidden transitions are observed in the spectrum. Five types of Rydberg series are assigned to electronic transitions from the outermost 2b//1 orbital to the d-like orbitals, three types to the p-like orbitals, and one type to the s-like orbital. The quantum defects of these transitions and a series limit 84 417 plus or minus 84417 plus or minus 8 cm** minus **1 (10. 466 plus or minus 0. 001 eV) were determined using the extended Rydberg series. The results obtained in this experiment are compared with theoretical calculations.