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Title: Stripping and excitation in collisions between p and He{sup +}(n{<=}3) calculated by a quantum time-dependent approach with semiclassical trajectories

Abstract

Stripping and excitation cross sections are calculated, using a time-dependent discrete-variable approach, for collisions of protons with energies from 0.5 keV to 2 MeV with He{sup +} initially in the 1s, 2s, 2p, 3s, 3p, and 3d states. This quantum-semiclassical approach takes trajectory curvature into account. The spatial and temporal convergence properties of the method are analyzed for the ground and higher states. The results are in good agreement with existing accurate calculations and experimental cross sections, available for E{sub p}{>=}3.73 keV. Results are also obtained for lower-energy collisions where the cross sections are still significant but trajectory curvature is important.

Authors:
;  [1];  [2]
  1. Department of Physics and Astronomy, California State University at Long Beach, Long Beach, California 90840 (United States)
  2. Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
Publication Date:
OSTI Identifier:
20640858
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 69; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevA.69.032709; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; CONVERGENCE; CROSS SECTIONS; EXCITATION; EXCITED STATES; GROUND STATES; HELIUM IONS; ION-ATOM COLLISIONS; IONIZATION; KEV RANGE; MEV RANGE; PROTONS; SEMICLASSICAL APPROXIMATION; STRIPPING; TIME DEPENDENCE

Citation Formats

Melezhik, Vladimir S, Hu, C -Y, and Cohen, James S. Stripping and excitation in collisions between p and He{sup +}(n{<=}3) calculated by a quantum time-dependent approach with semiclassical trajectories. United States: N. p., 2004. Web. doi:10.1103/PhysRevA.69.032709.
Melezhik, Vladimir S, Hu, C -Y, & Cohen, James S. Stripping and excitation in collisions between p and He{sup +}(n{<=}3) calculated by a quantum time-dependent approach with semiclassical trajectories. United States. doi:10.1103/PhysRevA.69.032709.
Melezhik, Vladimir S, Hu, C -Y, and Cohen, James S. Mon . "Stripping and excitation in collisions between p and He{sup +}(n{<=}3) calculated by a quantum time-dependent approach with semiclassical trajectories". United States. doi:10.1103/PhysRevA.69.032709.
@article{osti_20640858,
title = {Stripping and excitation in collisions between p and He{sup +}(n{<=}3) calculated by a quantum time-dependent approach with semiclassical trajectories},
author = {Melezhik, Vladimir S and Hu, C -Y and Cohen, James S},
abstractNote = {Stripping and excitation cross sections are calculated, using a time-dependent discrete-variable approach, for collisions of protons with energies from 0.5 keV to 2 MeV with He{sup +} initially in the 1s, 2s, 2p, 3s, 3p, and 3d states. This quantum-semiclassical approach takes trajectory curvature into account. The spatial and temporal convergence properties of the method are analyzed for the ground and higher states. The results are in good agreement with existing accurate calculations and experimental cross sections, available for E{sub p}{>=}3.73 keV. Results are also obtained for lower-energy collisions where the cross sections are still significant but trajectory curvature is important.},
doi = {10.1103/PhysRevA.69.032709},
journal = {Physical Review. A},
issn = {1050-2947},
number = 3,
volume = 69,
place = {United States},
year = {2004},
month = {3}
}