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Channeling Radiation in a Crystal Undergoing an Action of Ultrasonic or Electromagnetic Waves
Author(s) -
Dedkov G. V.
Publication year - 1994
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221840227
Subject(s) - physics , electromagnetic radiation , radiation , crystal (programming language) , electron , harmonics , ultrasonic sensor , transition radiation , perturbation (astronomy) , atomic physics , resonance (particle physics) , computational physics , quantum electrodynamics , optics , quantum mechanics , acoustics , voltage , computer science , programming language
The radiation emitted by channeled electrons and positrons in a crystal undergoing an action of ultrasonic (electromagnetic) waves is considered in quantum approximation. The most general crystal potential is shown to consist of two terms: the stationary and nonstationary ones both depending on the atomic displacements caused by the wave. As a result the peak positions and intensities of channeling radiation depend on the wave intensity, too. At resonance between one of the perturbation harmonics of the crystal potential and the proper particle transition the calculated radiation rate exceeds that one without wave by several orders.