Anomalous vibrational excitation in the small angle scattering of He+ from HCl at Elab=20-60 eV
Energy loss spectra of forward scattered He+ ions in collisions with HCl are reported for collision energies (E(lab)) in the range 20-60 eV. The spectra extend up to total energy transfers of about 2.5 eV, where the intensity is 6 orders of magnitude less than the elastic forward peak. At large ener...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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American Chemical Society, USA
1995
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| Online Access: | http://irep.iium.edu.my/35864/ http://irep.iium.edu.my/35864/1/JPC1995.pdf |
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| author | Thomas , Ruhaltinger Jan Peter , Toennies Ruigang , Wang Ibrahim Ali , Noorbatcha Susanta , Mahapatra Narayanasami , Sathyamurthy |
| author_facet | Thomas , Ruhaltinger Jan Peter , Toennies Ruigang , Wang Ibrahim Ali , Noorbatcha Susanta , Mahapatra Narayanasami , Sathyamurthy |
| author_sort | Thomas , Ruhaltinger |
| building | IIUM Repository |
| collection | Online Access |
| description | Energy loss spectra of forward scattered He+ ions in collisions with HCl are reported for collision energies (E(lab)) in the range 20-60 eV. The spectra extend up to total energy transfers of about 2.5 eV, where the intensity is 6 orders of magnitude less than the elastic forward peak. At large energy transfers a number of broad maxima indicating a propensity for large Delta v transitions are observed. Three-dimensional quasiclassical trajectory calculations treating HCl as a rigid rotor for the long range ion-dipole/quadrupole He+-HCl interaction and a short range repulsion corresponding to the isoelectronic He+-Ar account for much of the energy transfer at low Delta E. At higher Delta E, the rigid rotor model is dearly inadequate and a better description of the experiment requires consideration of high lying repulsive states of HCl+ which appear to be temporarily accessed by charge transfer. |
| first_indexed | 2025-11-14T15:44:33Z |
| format | Article |
| id | iium-35864 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T15:44:33Z |
| publishDate | 1995 |
| publisher | American Chemical Society, USA |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-358642014-03-09T02:21:14Z http://irep.iium.edu.my/35864/ Anomalous vibrational excitation in the small angle scattering of He+ from HCl at Elab=20-60 eV Thomas , Ruhaltinger Jan Peter , Toennies Ruigang , Wang Ibrahim Ali , Noorbatcha Susanta , Mahapatra Narayanasami , Sathyamurthy QD Chemistry Energy loss spectra of forward scattered He+ ions in collisions with HCl are reported for collision energies (E(lab)) in the range 20-60 eV. The spectra extend up to total energy transfers of about 2.5 eV, where the intensity is 6 orders of magnitude less than the elastic forward peak. At large energy transfers a number of broad maxima indicating a propensity for large Delta v transitions are observed. Three-dimensional quasiclassical trajectory calculations treating HCl as a rigid rotor for the long range ion-dipole/quadrupole He+-HCl interaction and a short range repulsion corresponding to the isoelectronic He+-Ar account for much of the energy transfer at low Delta E. At higher Delta E, the rigid rotor model is dearly inadequate and a better description of the experiment requires consideration of high lying repulsive states of HCl+ which appear to be temporarily accessed by charge transfer. American Chemical Society, USA 1995-10-19 Article PeerReviewed application/pdf en http://irep.iium.edu.my/35864/1/JPC1995.pdf Thomas , Ruhaltinger and Jan Peter , Toennies and Ruigang , Wang and Ibrahim Ali , Noorbatcha and Susanta , Mahapatra and Narayanasami , Sathyamurthy (1995) Anomalous vibrational excitation in the small angle scattering of He+ from HCl at Elab=20-60 eV. Journal Of Physical Chemistry, 99 (42). pp. 15544-15550. ISSN 0022-3654 http://pubs.acs.org/doi/abs/10.1021/j100042a032 DOI: 10.1021/j100292a037 |
| spellingShingle | QD Chemistry Thomas , Ruhaltinger Jan Peter , Toennies Ruigang , Wang Ibrahim Ali , Noorbatcha Susanta , Mahapatra Narayanasami , Sathyamurthy Anomalous vibrational excitation in the small angle scattering of He+ from HCl at Elab=20-60 eV |
| title | Anomalous vibrational excitation in the small angle scattering of He+ from HCl at Elab=20-60 eV |
| title_full | Anomalous vibrational excitation in the small angle scattering of He+ from HCl at Elab=20-60 eV |
| title_fullStr | Anomalous vibrational excitation in the small angle scattering of He+ from HCl at Elab=20-60 eV |
| title_full_unstemmed | Anomalous vibrational excitation in the small angle scattering of He+ from HCl at Elab=20-60 eV |
| title_short | Anomalous vibrational excitation in the small angle scattering of He+ from HCl at Elab=20-60 eV |
| title_sort | anomalous vibrational excitation in the small angle scattering of he+ from hcl at elab=20-60 ev |
| topic | QD Chemistry |
| url | http://irep.iium.edu.my/35864/ http://irep.iium.edu.my/35864/ http://irep.iium.edu.my/35864/ http://irep.iium.edu.my/35864/1/JPC1995.pdf |