Photodissociation of HBr/LiF(001): A quantum mechanical model | Zendy

Tamar Seideman | Zendy

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Photodissociation of HBr/LiF(001): A quantum mechanical model

Author(s) -

Tamar Seideman

Publication year - 1993

Publication title -

the journal of chemical physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.071

H-Index - 357

eISSN - 1089-7690

pISSN - 0021-9606

DOI - 10.1063/1.466025

Subject(s) - photodissociation , polarization (electrochemistry) , chemistry , atomic physics , excitation , hydrogen , gas phase , quantum , quantum yield , physics , photochemistry , optics , quantum mechanics , organic chemistry , fluorescence

The photodissociation dynamics of HBr adsorbed on a LiF(001) surface is studied using time‐independent quantum mechanics. The photodissociation line shape and the Br(2P1/2)/Br(2P3/2) yield ratio are computed and compared with the corresponding quantities for gas phase photodissociation. The angular distribution of the hydrogen photofragments following excitation of adsorbed HBr is computed and found to agree qualitatively with experimental data [Bourdon and co‐workers, J. Chem. Phys. 95, 1361 (1991)]. The effect of polarization of the photon is illustrated and discussed. We find the field polarization to affect significantly the magnitude of the photodissociation signal but not the angular dependence of the photofragment distribution, in agreement with experiment and in accord with expectations for a strongly aligned adsorbed phase.

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