Submillimeter-Wave Spectra of the SF Radical

✍ Scribed by Isamu Morino; Koichi M.T. Yamada

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 221 KB
• Volume: 207
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.2001.8302

✦ Synopsis

Pure rotational transitions of the SF radical in the ground electronic state, 2 , have been measured in the millimeter-and submillimeter-wave region using a spectrometer equipped with backward wave oscillators as radiation sources. The radical was generated by a dc discharge in a gas mixture of SF 6 and He. Forty-four lines have been measured in the frequency range from 248 to 845 GHz, for J values up to 25.5. The accuracy in line position measurement is typically 20-100 kHz, depending on the Doppler broadening. The present data were analyzed by a least-squares-fit procedure using an effective Hamiltonian for 2 states, together with the transition frequencies in the microwave region available in the literature. The molecular constants have been revised with improved accuracy.