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  Elastic and rotationally inelastic differential cross sections for He+H2O collisions

Brudermann, J., Steinbach, C., Buck, U., Patkowski, K., & Moszynski, R. (2002). Elastic and rotationally inelastic differential cross sections for He+H2O collisions. Journal of Chemical Physics, 117(24), 11166-11174.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-172B-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-172C-8
Genre: Journal Article

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Brudermann, J.1, Author              
Steinbach, C.1, Author              
Buck, U.1, Author              
Patkowski, K., Author
Moszynski, R., Author
Affiliations:
1Research Group Clusterdynamik, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063296              

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 Abstract: Elastic and rotationally inelastic cross sections have been measured for He+H2O scattering at two collision energies, 66.3 and 99.0 meV, using the crossed molecular beam technique. The inelastic events are detected by time-of-flight analysis of the scattered He atoms. The data are converted to elastic differential cross sections and inelastic angular-dependent energy loss spectra in the center-of-mass system. They are compared with averaged, full close-coupling calculations of state-to-state cross sections for rotational excitation based on a newly calculated ab initio potential using symmetry- adapted perturbation theory. The agreement with the elastic differential cross sections is excellent. The energy loss spectra are reproduced satisfactorily and among the largest differential cross sections that contributed to the measurements are excitations around all three possible axes for ΔJ = 1 but a preference of the excitation around the in- plane C axis for ΔJ = 2 transitions. (C) 2002 American Institute of Physics.

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Language(s): eng - English
 Dates: 2002-12-22
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 13417
ISI: 000179774000025
 Degree: -

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Title: Journal of Chemical Physics
  Alternative Title : J. Chem. Phys.
Source Genre: Journal
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Pages: - Volume / Issue: 117 (24) Sequence Number: - Start / End Page: 11166 - 11174 Identifier: ISSN: 0021-9606