Laser and Fourier Transform Emission Spectroscopy of theG4Φ–X4Φ System of TiF

✍ Scribed by R.S. Ram; J.R.D. Peers; Ying Teng; A.G. Adam; A. Muntianu; P.F. Bernath; S.P. Davis

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 593 KB
• Volume: 184
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1997.7301

✦ Synopsis

The emission spectrum of the G 4 F-X 4 F transition of TiF has been observed in the region 13 500-16 000 cm 01 using a Fourier transform spectrometer (FTS), as well as by laser excitation spectroscopy. In the FTS experiments the bands were excited in a carbon tube furnace by the reaction of titanium metal vapor with CF 4 at a temperature of about 2300ЊC. In the laser experiments the TiF molecules were produced by laser vaporization of a Ti rod followed by reaction with SF 6 using a pulsed supersonic jet source. Three groups of bands with high-wavenumber subband heads at 14 388, 15 033, and 15 576 cm 01 have been assigned as 0-1, 0-0, and 1-0 vibrational bands of the G 4 F-X 4 F transition, respectively. Each vibrational band consists of four subbands assigned as 4 F 3/2 -4 F 3/2 , 4 F 5/2 -4 F 5/2 , 4 F 7/2 -4 F 7/2 , and 4 F 9/2 -4 F 9/2 . A rotational analysis has been performed and molecular constants for the ground and excited states have been extracted using the combined FTS and laser excitation measurements. The correspondence between the electronic states of TiF, TiH, and Ti / has also been discussed.