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The infinite order sudden approximation and the delta-shell potential Dancho, Stephen John
Abstract
The Infinite Order Sudden (IOS) approximation is applied to the collision of an atom with a diatom where the intermolecular potential is given by a delta-shell. It is shown that modelling the potential as such allows for a simpler calculation of the close-coupled equations, and using the MS results in even further savings in calculations. Exact and IOS calculations at 300K and 1000K are compared and it is found that the WS overestimates inelastic cross sections for both temperatures. A variety of corrections to the IOS are considered and the Energy Corrected MS (ECIOS) approximation is shown to be the best of those studied. Other possible improvements to the IOS are proposed.
Item Metadata
Title |
The infinite order sudden approximation and the delta-shell potential
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1992
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Description |
The Infinite Order Sudden (IOS) approximation is applied to the
collision of an atom with a diatom where the intermolecular potential
is given by a delta-shell. It is shown that modelling the potential as
such allows for a simpler calculation of the close-coupled equations,
and using the MS results in even further savings in calculations. Exact
and IOS calculations at 300K and 1000K are compared and it
is found that the WS overestimates inelastic cross sections for both
temperatures. A variety of corrections to the IOS are considered and
the Energy Corrected MS (ECIOS) approximation is shown to be the
best of those studied. Other possible improvements to the IOS are
proposed.
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Extent |
3694002 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2008-12-16
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0061747
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
1992-11
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.