Coherent pair production in crystals in presence of acoustic waves

A. R. Mkrtchyan, A. A. Saharian, V. V. Parazian

Research output: Contribution to journalArticle

Abstract

Coherent electron-positron pair production by high-energy photons is investigated in a periodically deformed single crystal with a complex base. The formula for the corresponding differential cross-section is derived for an arbitrary deformation field. The conditions are specified under which the influence of the deformation is considerable. The case is considered in detail when the photon enters into the crystal at small angles with respect to a crystallographic axis. The results of the numerical calculations are presented for SiO2 single crystal in the case of the deformation field generated by the acoustic wave of the S type. It is shown that, in dependence of the parameters, the presence of deformation can either enhance or reduce the pair creation cross-section.

Original languageEnglish
Pages (from-to)47-54
Number of pages8
JournalInternational Journal of Modern Physics A
Volume25
Issue numberSUPPL. 1
DOIs
Publication statusPublished - Jun 2010
Externally publishedYes

Keywords

  • coherent pair production
  • Interaction of particles with matter
  • physical effects of ultrasonics

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Astronomy and Astrophysics
  • Nuclear and High Energy Physics

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