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Stueckelberg oscillations in the charge transfer into the n = 2 and n = 3 shells of He 2 on collision with H
Author(s) -
Stolterfoht N.,
CabreraTrujillo R.,
Krstić P. S.,
Öhrn Y.,
Deumens E.,
Sabin J. R.
Publication year - 2009
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.22149
Subject(s) - charge (physics) , atomic physics , physics , transfer (computing) , impact parameter , range (aeronautics) , ab initio , atomic orbital , helium , collision , quantum , shell (structure) , quantum mechanics , electron , materials science , computer security , parallel computing , computer science , composite material
Abstract Probabilities for charge transfer by He 2+ impact on atomic H are calculated at low‐collision energies using an ab initio theory, which solves the time‐dependent Schrödinger equation. The charge transfer is interpreted in terms of radial and rotational couplings of molecular orbitals. Strong Stueckelberg oscillations for the charge transfer probability into the n = 2 shell of helium are observed over nearly the entire impact parameter range. The same oscillations are found for the charge transfer into the n = 3 shell in the impact parameter range from 2.5 a.u. upwards, whereas at impact parameters below 2.5 a.u. the oscillations disappear abruptly. This observation is associated with specific pathways along the potential curves, which are responsible for the charge transfer. Similarities with the interferences in Young's two‐slit experiment are pointed out. © 2009 Wiley Periodicals, Inc. Int J Quantum Chem, 2009