Results 181 to 190 of about 20,014 (223)
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The photodissociation of H2S: A study of indirect photodissociation
Chemical Physics Letters, 1984Abstract We have performed calculations for the photodissociation of H2S using surfaces constructed to test a model proposed by van Veen et al., in which the dissociation occurs via predissociated levels of the bound 1B1 excited state. Total Franck-Condon factors for the photodissociation and partial Franck-Condon factors for the product vibrational ...
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Chemical Physics, 1980
Abstract The absorption of photons by Li 2 from the X 1 Σ + g state to the A 1 Σ + u and B 1 Π u states is considered and the mechanisms that lead to dissociation are studied quantitatively. Calculations are reported on the direct predissociation of the b 3 Π u state. The significance of accidental predissociation of the A 1 Σ + u state
T. Uzer, A. Dalgarno
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Abstract The absorption of photons by Li 2 from the X 1 Σ + g state to the A 1 Σ + u and B 1 Π u states is considered and the mechanisms that lead to dissociation are studied quantitatively. Calculations are reported on the direct predissociation of the b 3 Π u state. The significance of accidental predissociation of the A 1 Σ + u state
T. Uzer, A. Dalgarno
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Applied Physics Letters, 1980
Transition moments and energies have been calculated for the X-A, bound to continuum, transition in HgCl. The photodissociation cross section at the peak (∼20 000 cm−1 or 500 nm) is 1.2×10−18 cm2 at 600 K. The laser energy 17 921 cm−1 or 558 nm) for the B-X transition is close to the peak energy, and a significant absorption will result from a buildup ...
P. S. Julienne +4 more
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Transition moments and energies have been calculated for the X-A, bound to continuum, transition in HgCl. The photodissociation cross section at the peak (∼20 000 cm−1 or 500 nm) is 1.2×10−18 cm2 at 600 K. The laser energy 17 921 cm−1 or 558 nm) for the B-X transition is close to the peak energy, and a significant absorption will result from a buildup ...
P. S. Julienne +4 more
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Photodissociation of bromochlorobenzenes
Journal of Photochemistry and Photobiology A: Chemistry, 2008The photodissociation kinetics of 2-, 3- and 4-bromochlorobenzene (BrClPh) and bromo-3,5-dichlorobenzene (Br-diClPh) have been studied in a molecular beam following excitation at 270 nm using femtosecond pump-probe spectroscopy. The kinetics and the dissociation dynamics in the BrClPhs were found to resemble the BrFPhs much more than the BrBrPhs. In 2-
Daniel Karlsson, Jan Davidsson
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The photodissociation of SO2+·
International Journal of Mass Spectrometry and Ion Processes, 1985Abstract The first ion photodissociation study of SO2+· is reported. Unlike CH3I+· which photodissociates from the molecular ion ground state, SO2+· is observed to photopredissociate from the A and B states via the C and D states. The C ← B contribution to the low energy region is assigned and vibrational frequencies of 100, 46.5 and 55.5 meV are ...
S.P. Goss +2 more
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Photodissociation and reaction dynamics
Physical Chemistry Chemical Physics, 2019This themed issue includes a collection of articles on photodissociation and reaction dynamics and marks the occasion of Professor Mike Ashfold's 65th birthday.
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Photodissociation of tetramethyldioxetane
The Journal of Physical Chemistry, 1978Abstract : Tetramethyldioxetane was excited with a single 10 psec pulse at 264 nm. The resulting acetone fluorescence was observed and the rise time was found to be less than 10 psec. A mechanism accounting for this and previous experimental evidence is proposed. (Author)
Kevin K. Smith +3 more
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Photodissociation of dimethylnitrosamine
Chemical Physics Letters, 1981Abstract Photodissociation of (CH 3 ) 2 N-NO following S 1 (nπ * ) ← S 0 excitation yields (CH 3 ) 2 N − and NO with a quantum yield of 1.03 ± 0.10. These fragments recombine leaving no stable photopioducts. A fraction of NO produced by photolysis is vibrationally excited.
G. Geiger +3 more
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Photodissociation of Triarylmethanes
1984Recently there have appeared several reports of picosecond absorption studies for the photodissociation of triarylmethanes(1,2,3). This class of molecules is of interest as photoexcitation leads to the formation of ion pairs, the kinetics of which are highly solvent dependent.
L. Manring, K. Peters
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The Photodissociation of Propynal
Berichte der Bunsengesellschaft für physikalische Chemie, 1985AbstractThe lowest reaction channel on the electronic ground state potential surface of propynal HC CCHO → HC CH + CO as well as its calculated energy barrier have been examined by UV photolysis and by IR multiphoton decomposition.
U. Brühlmann +3 more
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