Tell a friend
Print
Energy and momentum transfer of He atoms scattered from a lithium fluoride crystal surface
Legge, H. and Manson, J.R. and Toennies, J.P. (1999) Energy and momentum transfer of He atoms scattered from a lithium fluoride crystal surface. Journal of Chemical Physics, 110 (17), pp. 8767-8785.
Full text not available from this repository.
Abstract
Both of energy transfer and the normal and tangential force coefficents for scattering of a nearly monoenergetic beam of He atoms (incident energy Ei=63meV) from a clean single crystal LiF(001) surface have been measured unterwind tunnel conditions in the range of surface temperatures from 300 to 720K. Expressions are derived for the differential reflection coefficient for a realistic He-LiF(001) potential with the inclusion of multiphonon processes, and these expressions are used to calculate the average energy and momentum transfers as well as their higher moments. The comparisons between theory and experiment indicate the presence of a moderate degree of surface roughness. The measured recovery temperature depends on incident beam angle and is significantly larger than expected for complete or partial accommodation, in good agreement with the theoretical calculations
| Document Type: | Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Additional Information: | LIDO-Berichtsjahr=1999, | ||||||||
| Title: | Energy and momentum transfer of He atoms scattered from a lithium fluoride crystal surface | ||||||||
| Authors: |
| ||||||||
| Date: | 1999 | ||||||||
| Journal or Publication Title: | Journal of Chemical Physics | ||||||||
| Refereed publication: | Yes | ||||||||
| In ISI Web of Science: | Yes | ||||||||
| Volume: | 110 | ||||||||
| Page Range: | pp. 8767-8785 | ||||||||
| Status: | Published | ||||||||
| Keywords: | gas surface interaction, multiphoton processes, rarefied flow, force coefficients, heat transfer coefficient | ||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||
| HGF - Program: | Space | ||||||||
| HGF - Program Themes: | W RP - Raumtransport | ||||||||
| DLR - Research area: | Space | ||||||||
| DLR - Program: | W RP - Raumtransport | ||||||||
| DLR - Research theme (Project): | UNSPECIFIED | ||||||||
| Location: | Köln-Porz , Braunschweig , Göttingen | ||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Institut für Strömungsmechanik | ||||||||
| Deposited By: | elib DLR-Beauftragter | ||||||||
| Deposited On: | 16 Sep 2005 | ||||||||
| Last Modified: | 14 Jan 2010 20:32 |
Repository Staff Only: item control page
