Photofragmentation translational spectroscopy

A. M. Wodtke and Y. T. Lee, High resolution photofragmentation - Translational spectroscopy , in Molecular Photodissociation Dynamics, eds. M. N. R. Ashfold and J. E. Baggott, Royal Society of Chemistry, London, 1987. 

The rotational distribution of CN produced by this reaction at 193 nm has been measured and fitted to a Boltzmann distribution with T = 1450 K [74], Combined with photofragmentation translational spectroscopy, it was initially concluded that this channel is formed by an impulsive dissociation through a repulsive excited state [72],... 

Photofragmentation translational spectroscopy showed that the triplet channel represents about 10% of the total yield for photolysis at 266 nm [105,106]. The rotational distribution of 02( Ag) is consistent with this branching ratio [107],... 

Studies of Initial Dissociation Processes in 1,3,3-Trinitroazetidine by Photofragmentation Translational Spectroscopy Deon S. Anex, John C. Allman, and Yuan T. Lee... 

The method discussed here is photofragmentation translational spectroscopy. In this method, the molecule of interest is expanded frcMn a nozzle into a vacuum, and then the expansion is collimated to form a molecular beam. The molecular beam is then crossed with the output of a pulsed CO2 laser which excites the molecule of interest above the dissoda-tion threshold, relying on infrared multiphoton excitation to induce decomposition. In order to dissociate, a molecule must absorb approximately 20 infrared photons. 

Later studies investigated the thermal decomposition of TNAZ using photofragmentation translational spectroscopy. The details are presented in the following section by first describing the experimental technique used in some detail. This is followed by a presentation of the experimental results that include the time-of-fllght spectra collected under conditions of high- and low-laser fluence. Then the forward convolution method of... 

A Discusses structural analysis by x-ray crystallography A Explains chemical dynamics by photofragmentation translational spectroscopy A Covers kinetic analysis by ultrafast absorption and emission spectroscopy A Details syntheses of polycyclic caged amines, fuel additives, and polynitro compounds A Examines computer-aided design of monopropellants A Includes contributions by two Nobel laureates and five members of the National Academy of Sciences... 

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