Kolasinski, Kurt W.; Cemič, Franz; Hasselbrink, Eckart:
O₂/Pd(111) - Clarification of the Correspondence between Thermal-Desorption Features and Chemisorption States
1994
In: Chemical Physics Letters, Jg. 219 (1994), Heft 1-2, S. 113 - 117
Artikel/Aufsatz in Zeitschrift1994Chemie
Titel:
O₂/Pd(111) - Clarification of the Correspondence between Thermal-Desorption Features and Chemisorption States
Autor(in):
Kolasinski, Kurt W.; Cemič, Franz; Hasselbrink, EckartLSF
Erscheinungsjahr
1994
Erschienen in:
Titel:
Chemical Physics Letters
in:
Jg. 219 (1994), Heft 1-2, S. 113 - 117
ISSN:

Abstract:

The system O₂/Pd (111) was probed with EELS and thermal desorption spectrometry. The coincidence of 3 peaks in thermal desorption and the O-O region of the EELS spectrum was noted previously and a one-to-one correspondence between the states resolved in EELS and the desorption features was assumed. The authors show that this assumption is incorrect. The lowest binding energy state correlates with the highest frequency vibrational state. The lowest vibrational frequency state acts as a precursor to dissocn. The 2 higher temp. thermal desorption features both arise from the remaining state.