The dynamics of infrared multiphoton excitation and dissociation of SF6 has been investigated under collision‐free conditions by a crossed laser–molecular beam method. In order to understand the excitation mechanism and to elucidate the requirements of laser intensity and energy fluence, a series of experiments have been carried out to measure the dissociation yield dependences on energy fluence, vibrational temperature of SF6, the pulse duration of the CO2 laser, and the frequency in both one and two laser experiments. Translational energy distributions of the primary dissociation product SF5, measured by time‐of‐flight and angular distributions and the dissociation lifetime of excited SF6 as inferred from the observation of secondary dissociation of SF5 into SF4 and F during the laser pulse suggest that the dynamics of dissociation of excited molecules is dominated by complete energy randomization and rapid intramolecular energy transfer and can be adequately described by RRKM theory. An improved phenom...

background or methods

/pdf/multiphoton-dissociation-of-sf6-by-a-molecular-beam-method-ac57hlm9fz.pdf

Tunable lasers and applications 1062 083. Edited by A. Mooradian, T. Jaeger, P. Stokseth Springer-Verlag, 1976, pp 404, $25.70

Multiphoton dissociation of sf6 by a molecular beam method

A cw dye laser for spectroscopic and metrological applications has been constructed. A high stability is obtained through the use of several servo loops. The observed relative linewidth is 5 parts in 1010 (250 kHz FWHM) whereas the long term frequency stability reaches 1.5 parts in 1012 for observation times longer than 100 s. Amplitude stability is better than one part in 104. As an application, the hyperfine structure of two iodine lines has been studied by saturated absorption spectroscopy and the variation of the linewidth of the hyperfine components with iodine pressure has been determined.

background

/pdf/a-frequency-stabilized-cw-dye-laser-for-spectroscopic-and-43h6d0pz5u.pdf

A frequency stabilized CW dye laser for spectroscopic and metrological applications

P2C-EWE0 BY TIC USC 4 M S LBL-10009 Lawrence Berkeley Laboratory UNIVERSITY OF CALIFORNIA Materials & Molecular Research Division HULTIPHOTON '.SSOCIATION OF POLYATOHIC MOLECULES Peter A. Schulz (Ph. D. thesis) October 1979 MUSTER Prepared for Jfta U.S. Department of Erargy under Conlreot W-7<05-ENG~

Tunable lasers and applications 1062 083. Edited by A. Mooradian, T. Jaeger, P. Stokseth Springer-Verlag, 1976, pp 404, $25.70

Citations

Multiphoton dissociation of sf6 by a molecular beam method

A frequency stabilized CW dye laser for spectroscopic and metrological applications

Multiphoton dissociation of poly atomic molecules

References

Multiphoton dissociation of sf6 by a molecular beam method

A frequency stabilized CW dye laser for spectroscopic and metrological applications

Multiphoton dissociation of poly atomic molecules