de Meijere, Armin; Hirayama, H.; Weik, F.; Hasselbrink, Eckart:
Photodesorption dynamics and structural information for oxygen adsorbed on palladium(111).
1993
In: Springer Series in Surface Sciences, Jg. 31 (1993), Heft Desorption Induced by Electronic Transitions, DIET V, S. 57 - 62
Artikel/Aufsatz in Zeitschrift / Fach: Chemie
Titel:
Photodesorption dynamics and structural information for oxygen adsorbed on palladium(111).
Autor(in):
de Meijere, Armin; Hirayama, H.; Weik, F.; Hasselbrink, Eckart im Online-Personal- und -Vorlesungsverzeichnis LSF anzeigen
Erscheinungsjahr
1993
Erschienen in:
Springer Series in Surface Sciences, Jg. 31 (1993), Heft Desorption Induced by Electronic Transitions, DIET V, S. 57 - 62
ISSN

Abstract:

UV irradn. (hv = 3.9 to 6.4 eV) of O2 adsorbed on Pd (111) induces photodesorption and photodissocn. Both processes are of non-thermal character. Moreover, thermal conversion processes between adsorbate states are obsd. and be coupled to a thermal desorption channel. As the incident photon energy is raised from 3.9 eV to 6.4 eV, the cross sections for all processes rise exponentially by a factor of 38. Angle resolved measurements with respect to the polar and azimuthal desorption angle show that desorption flux and translational energy carry information about the adsorbate binding geometry prior to desorption.