Anomalous vibrational excitation in the small angle scattering of He+ from HCl at Elab=20-60 eV

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...

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Main Authors: Thomas , Ruhaltinger, Jan Peter , Toennies, Ruigang , Wang, Ibrahim Ali , Noorbatcha, Susanta , Mahapatra, Narayanasami , Sathyamurthy
Format: Article
Language:English
Published: American Chemical Society, USA 1995
Subjects:
QD Chemistry
Online Access: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
id iium-35864
recordtype eprints
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
repository_type Digital Repository
institution_category Local University
institution International Islamic University Malaysia
building IIUM Repository
collection Online Access
language English
topic QD Chemistry
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
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.
format Article
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
title 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_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_sort anomalous vibrational excitation in the small angle scattering of he+ from hcl at elab=20-60 ev
publisher American Chemical Society, USA
publishDate 1995
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
first_indexed 2023-09-18T20:51:21Z
last_indexed 2023-09-18T20:51:21Z
_version_ 1777410015918817280

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