The Vibrational Fine Structure of Chemisorbed C2H4Molecules in the (1s-1, π*) State
- 1 January 1990
- journal article
- Published by IOP Publishing in Physica Scripta
- Vol. T31 (T31) , 131-136
- https://doi.org/10.1088/0031-8949/1990/t31/018
Abstract
The fine structure of C2H4 molecules in the (1s-1, π*) state is resolved using a plane grating ellipsoidal mirror grazing incidence monochromator at the storage ring BESSY. Two vibrational series can be identified, assigned to C-C and C-H vibrations. The natural line width of the (1s-1, π*) state was found to be 160 meV for condensed C2H4 multilayers. For submonolayers of C2H4 molecules on Ag(100) and Cu(100) this value was found to increase to 280 and 700 meV respectively. A shift to lower energies of the ground state transition is observed for the adsorbed molecules with respect to the multilayer case.Keywords
This publication has 17 references indexed in Scilit:
- High Resolution Results from the LBL 55-Meter SGM at SSRL Near the K-Edge of Carbon and NitrogenPhysica Scripta, 1990
- High Resolution Soft X-Ray Spectroscopies with the Dragon BeamlinePhysica Scripta, 1990
- High resolution photoabsorption spectroscopy at the carbonK-EdgeApplied Physics A, 1989
- Determination of molecular orientations on surfaces from the angular dependence of near-edge x-ray-absorption fine-structure spectraPhysical Review B, 1987
- The high energy plane grating monochromators at BESSYNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1986
- C2Hn fragments on metal surfacesLangmuir, 1985
- Absorption-edge resonances, core-hole screening, and orientation of chemisorbed molecules: CO, NO, andon Ni(100)Physical Review B, 1982
- The observation of electric-dipole-forbidden inner-shell transitions in N2and Ar by the electron energy-loss techniqueJournal of Physics B: Atomic and Molecular Physics, 1982
- Orientation of Chemisorbed Molecules from Surface-Absorption Fine-Structure Measurements: CO and NO on Ni(100)Physical Review Letters, 1981
- Molecular Geometries of Acetylene and Ethylene Chemisorbed On Cu, Ni, Pd, and Pt SurfacesIBM Journal of Research and Development, 1978