Vibrational anharmonicity constants for SF/sub 6/. I. A 16. mu. diode laser study of transitions in the. nu. /sub 4/ region

Journal Article · Fri Sep 01 04:00:00 EDT 1978 · J. Chem. Phys.; (United States)

OSTI ID:6682848

Person, W B; Kim, K C

A total of eight empirical anharmonicity constants have been determined from diode laser studies of the ..nu../sub 4/ vibrational transitions in SF/sub 6/. The transitions from the low excited states on the 16 ..mu.. region were recorded using semiconductor lasers with a long optical path absorption cell. The relative intensities of the corresponding Q branches were related to the population distribution in the temperature range from 160 to 300 K in order to make the spectroscopic assignments of the ..nu../sub 4/ hot band transitions. These measured states represent some 86% of the total population distribution of the SF/sub 6/ molecules at 300 K. Theoretical models based on Morse potential functions are discussed and the results from the model calculations are compared with the experimental vibrational anharmonicity constants.

• Research Organization: University of California, Los Alamos Scientific Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 6682848
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 69:5; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640300* -- Atomic
Molecular & Chemical Physics
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION SPECTRA
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INFRARED SPECTRA
LASER RADIATION
MOLECULAR STRUCTURE
RADIATIONS
SPECTRA
SULFUR COMPOUNDS
SULFUR FLUORIDES
VIBRATIONAL STATES