Quantum-mechanical approach to planar positron channeling in a longitudinal hypersonic field

L. Sh Grigoryan, A. R. Mkrtchyan, A. H. Mkrtchyan, H. F. Khachatryan, H. Prade, W. Wagner, M. A. Piestrup

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The wave function of a planar-channeled positron with energy 10 MeV≤E≤100 MeV under the resonant influence of hypersound is calculated. It is found that the longitudinal hypersound changes the spectral distribution of the channeling radiation significantly. With decreasing wavelength λs of the hypersound, starting from λs = λE, where λE is the characteristic length related to one transverse oscillation of the channeled positron, a new type of radiative transition occurs. It is characterized by the stimulated enhancement of transverse energy of the positron at channeling (inverse radiative transition). When λs approaches λE/2 the inverse transitions show a resonant behaviour.

Original languageEnglish
Pages (from-to)132-141
Number of pages10
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume173
Issue number1
DOIs
Publication statusPublished - 1 Jan 2001
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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