Vibrational excitation of water by electron impact

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M. A. Khakoo
Department of Physics, California State University, Fullerton, California 92834, USA

C. Winstead and V. McKoy
A. A. Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125, USA

Received 25 March 2009; published 28 May 2009

Experimentaland calculated differential cross sections (DCSs) for electron-impact excitation ofthe (010) bending mode and unresolved (100) symmetric and (001)antisymmetric stretching modes of water are presented. Measurements are reportedat incident energies of 1–100 eV and scattering angles of10°–130° and are normalized to the elastic-scattering DCSs for waterdetermined earlier by our group. The calculated cross sections areobtained in the adiabatic approximation from fixed-nuclei, electronically elastic scatteringcalculations using the Schwinger multichannel method. The present results arecompared to available experimental and theoretical data.

URL:	http://link.aps.org/doi/10.1103/PhysRevA.79.052711
DOI:	10.1103/PhysRevA.79.052711
PACS:	34.80.Bm; 34.80.Gs 34.80.Bm Elastic scattering of electrons/positrons by atoms and molecules 34.80.Gs Molecular excitation and ionization by electron/positron impact YEAR: 2009
KEYWORDS:	electron impact excitation, molecule-electron collisions, vibrational states, water

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