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Title: Two-center interference in fast proton-H{sub 2}-electron transfer and excitation processes

Abstract

We present experimental evidence for a strong dependence on the angle between the molecular axis of H{sub 2} and the direction of the incoming projectile (p) in the cross section for transfer excitation in fast p-H{sub 2} collisions. For collision energies of 1.0 and 1.3 MeV we find good agreement between the observed data and an analytical expression based on a two-atomic-center description using Brinkman-Kramers amplitudes. This clearly shows that the observed angular dependence is a result of quantum mechanical interference and not a trivial geometrical effect.

Authors:
; ; ; ; ; ;  [1];  [2];  [1];  [3];  [4]; ;  [5];  [6]
  1. Department of Physics, Stockholm University, 10691 Stockholm (Sweden)
  2. Department of Physics, Kansas State University, Manhattan, Kansas 66506 (United States)
  3. (Russian Federation)
  4. Fock Institute of Physics, St.Petersburg State University, 198504 St.Petersburg (Russian Federation)
  5. Manne Siegbahn Laboratory, S-104 05, Stockholm (Sweden)
  6. Angstroem Laboratory, Uppsala University, S-75121 Uppsala (Sweden)
Publication Date:
OSTI Identifier:
20786423
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 72; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.72.050703; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; AMPLITUDES; CATIONS; CHARGE EXCHANGE; ELECTRON TRANSFER; EXCITATION; HYDROGEN; HYDROGEN IONS; INTERFERENCE; ION-MOLECULE COLLISIONS; MEV RANGE; MOLECULES; PROTONS; QUANTUM MECHANICS

Citation Formats

Stoechkel, K., Eidem, O., Cederquist, H., Zettergren, H., Reinhed, P., Schuch, R., Schmidt, H. T., Cocke, C. L., Levin, S. B., Fock Institute of Physics, St.Petersburg State University, 198504 St.Petersburg, Ostrovsky, V. N., Kaelberg, A., Simonsson, A., and Jensen, J. Two-center interference in fast proton-H{sub 2}-electron transfer and excitation processes. United States: N. p., 2005. Web. doi:10.1103/PHYSREVA.72.0.
Stoechkel, K., Eidem, O., Cederquist, H., Zettergren, H., Reinhed, P., Schuch, R., Schmidt, H. T., Cocke, C. L., Levin, S. B., Fock Institute of Physics, St.Petersburg State University, 198504 St.Petersburg, Ostrovsky, V. N., Kaelberg, A., Simonsson, A., & Jensen, J. Two-center interference in fast proton-H{sub 2}-electron transfer and excitation processes. United States. doi:10.1103/PHYSREVA.72.0.
Stoechkel, K., Eidem, O., Cederquist, H., Zettergren, H., Reinhed, P., Schuch, R., Schmidt, H. T., Cocke, C. L., Levin, S. B., Fock Institute of Physics, St.Petersburg State University, 198504 St.Petersburg, Ostrovsky, V. N., Kaelberg, A., Simonsson, A., and Jensen, J. Tue . "Two-center interference in fast proton-H{sub 2}-electron transfer and excitation processes". United States. doi:10.1103/PHYSREVA.72.0.
@article{osti_20786423,
title = {Two-center interference in fast proton-H{sub 2}-electron transfer and excitation processes},
author = {Stoechkel, K. and Eidem, O. and Cederquist, H. and Zettergren, H. and Reinhed, P. and Schuch, R. and Schmidt, H. T. and Cocke, C. L. and Levin, S. B. and Fock Institute of Physics, St.Petersburg State University, 198504 St.Petersburg and Ostrovsky, V. N. and Kaelberg, A. and Simonsson, A. and Jensen, J.},
abstractNote = {We present experimental evidence for a strong dependence on the angle between the molecular axis of H{sub 2} and the direction of the incoming projectile (p) in the cross section for transfer excitation in fast p-H{sub 2} collisions. For collision energies of 1.0 and 1.3 MeV we find good agreement between the observed data and an analytical expression based on a two-atomic-center description using Brinkman-Kramers amplitudes. This clearly shows that the observed angular dependence is a result of quantum mechanical interference and not a trivial geometrical effect.},
doi = {10.1103/PHYSREVA.72.0},
journal = {Physical Review. A},
number = 5,
volume = 72,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 2005},
month = {Tue Nov 15 00:00:00 EST 2005}
}