title: Fourier Transform Microwave Spectroscopy of 13C-Substituted CCS Radicals
abstract: The rotational spectral lines of the 13C isotopic species of CCS (13CCS, C13CS, and 13C13CS) have been observed using a Fourier transform microwave spectrometer in combination with a pulsed-discharge nozzle. The hyperfine-resolved JN = 10-01, JN = 21-10, and JN = 32-21 transitions have been observed in the 11-, 22-, and 33-GHz regions, respectively, with an accuracy of about 5 kHz. The observed transition frequencies for 13CCS and C13CS are analyzed simultaneously with millimeter-wave data, and the hyperfine interaction constants for both species are determined accurately. Astronomical implications for these radicals are discussed. Copyright 1997 Academic Press. Copyright 1997Academic Press
authors.affiliation: Faculty of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113, Japan
authors.initials: M
authors.lastname: Ikeda
authors.initials: Y
authors.lastname: Sekimoto
authors.initials: S
authors.lastname: Yamamoto