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Observation of the 5p Rydberg states of sulfur difluoride radical by resonance-enhanced multiphoton ionization spectroscopy.
- Source :
-
Journal of Chemical Physics . 4/14/2008, Vol. 128 Issue 14, p144306. 5p. 1 Chart, 2 Graphs. - Publication Year :
- 2008
-
Abstract
- Sulfur difluoride radicals in their ground state have been produced by a “laser-free” pulsed dc discharge of the SF6/Ar gas mixtures in a supersonic molecular beam and detected by mass-selective resonance-enhanced multilphoton ionization (REMPI) spectroscopy in the wavelength range of 408–420 nm. Analyses of the (3+1) REMPI excitation spectrum have enabled identification of three hitherto unknown Rydberg states of this radical. Following the Rydberg state labeling in our previous work [see J. Phys. Chem. A 102, 7233 (1998)], these we label the K(5p1) [ν0-0=71 837 cm-1, ω1′(a1 sym str)=915 cm-1], L(5p2) [ν0-0=72 134 cm-1, ω1′(a1 sym str)=912 cm-1], and M(5p3) [ν0-0=72 336 cm-1, ω1′(a1 sym str)=926 cm-1] Rydberg states, respectively. [Origins, relative to the lowest vibrational level of the X 1A1 ground state, and vibrational frequencies of the symmetric S–F stretching mode are suggested by the numbers in brackets.] Photofragmentation process of SF2+→SF++F that relates to the REMPI spectrum was discussed. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PHYSICS
*SPECTRUM analysis
*SULFUR
*RYDBERG states
*IONIZATION (Atomic physics)
Subjects
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 128
- Issue :
- 14
- Database :
- Academic Search Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 31696080
- Full Text :
- https://doi.org/10.1063/1.2889382