High-energy proton-hydrogen-atom excitation multipole moments

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Proton-hydrogen-atom excitation angle-integrated multiple moments are calculated within a classical trajectory approximation for the relative proton-proton motion, but with full coupling of basis states centred on both protons. For the excitation channels the authors find that the dipole moment within the n=2 states is very sensitive to final-state interactions between the degenerate excited states. The dipole moment is similar in magnitude to the dipole moment induced in electron-hydrogen excitation but the sign is opposite. In this case the electron is more often on the down-beam side of the target proton. The time rate of change of the dipole moment for excitation to n=2 is similar in magnitude and the same sign (negative) as in electron-hydrogen excitation.

Original languageEnglish
Article number018
Pages (from-to)3215-3222
Number of pages8
JournalJournal of Physics B: Atomic and Molecular Physics
Issue number16
StatePublished - 1 Dec 1980

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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