Scattering of state-selected ND3 on graphite (0001): recovering the molecule-surface interaction from scattering measurements

Stanislav I. Ionov; Michael E. LaVilla

doi:10.1117/12.59312

14 May 1992 Scattering of state-selected ND₃ on graphite (0001): recovering the molecule-surface interaction from scattering measurements

Stanislav I. Ionov, Michael E. LaVilla

Author Affiliations +

Proceedings Volume 1636, Applied Spectroscopy in Materials Science II; (1992) https://doi.org/10.1117/12.59312
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

State-selected molecular beams of ND₃ in antisymmetric inversion states (formula available in paper) are scattered on a graphite (0001) surface at T₈ = 130K. A preponderance of symmetric inversion states, (formula available in paper), is observed in the directly scattered molecules. The observed effect is an interference on a surface potential between the left and right inversion configurations of a single molecule which are oppositely oriented with respect to the surface. A procedure leading from the experimental data on this molecular self-diffraction to an approximate analytical molecule-surface potential is suggested. This procedure, which is based on the infinite order sudden approximation (Gerber et. al., J. Chem. Phys. 73, 4397 (1980)), requires experimental study of the inversion symmetry change for several initial rotational states as a function of translational energy.

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Stanislav I. Ionov and Michael E. LaVilla "Scattering of state-selected ND₃ on graphite (0001): recovering the molecule-surface interaction from scattering measurements", Proc. SPIE 1636, Applied Spectroscopy in Materials Science II, (14 May 1992); https://doi.org/10.1117/12.59312

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