Self-focusing in SF/sub 6/

Conference · Thu Jan 01 04:00:00 EST 1981

OSTI ID:6406102

Ackerhalt, J R; Galbraith, H W

It is shown by explicit calculation of previously published quasicontinuum model that the molecular susceptibility rapidly approaches zero as higher excited states of the molecule become populated. Hence the overtones of the ..nu../sub 3/-pumped mode are totally responsible for the self focusing effects in SF/sub 6/. The ..nu../sub 3/ ladder contribution to the susceptibility is calculated. The vibrational model is a classical triply degenerate anharmonic oscillator in the Cartesian basis with the anharmonicity parameters chosen to be consistent with the latest spectroscopic analysis of the 3..nu../sub 3/ overtone spectrum. The rotational structure is represented by a distribution of these oscillators where the distribution is chosen to correspond to the spectrum of the ..nu../sub 3/ fundamental. Good agreement is found with the 300/sup 0/ in self-focusing data of Nowak and Ham at CO/sub 2/ P(28), P(20) and P(10) in SF/sub 6/.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6406102
• Report Number(s): LA-UR-81-1157; CONF-810429-15
• Country of Publication: United States
• Language: English

Related Subjects

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640305 -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Theory-- (-1987)
74 ATOMIC AND MOLECULAR PHYSICS
COLLISIONS
ELECTROMAGNETIC RADIATION
EMISSION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
LASER RADIATION
MATHEMATICAL MODELS
MOLECULAR MODELS
MOLECULE COLLISIONS
OPTICAL PUMPING
PHOTON COLLISIONS
PHOTON-MOLECULE COLLISIONS
PUMPING
RADIATIONS
ROTATIONAL STATES
STIMULATED EMISSION
SULFUR COMPOUNDS
SULFUR FLUORIDES
VIBRATIONAL STATES