Open AccessDIFFUSION COEFFICIENTS IN MOMENTUM FOR A RELATIVISTIC ELECTRON BEAM IN AN UNDULATOR
Author(s) -
V. V. Ognivenko
Publication year - 2019
Publication title -
problems of atomic science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.216
H-Index - 17
eISSN - 1562-6016
pISSN - 1682-9344
DOI - 10.46813/2019-124-063
Subject(s) - physics , undulator , electron , momentum diffusion , momentum (technical analysis) , diffusion , relativistic electron beam , cathode ray , beam (structure) , magnetic field , relativistic particle , atomic physics , radiation , quantum electrodynamics , computational physics , optics , quantum mechanics , finance , turbulence , economics , thermodynamics
We consider a motion of a relativistic electron beam in a spatially periodic magnetic field of an undulator taking into account the influence of the spontaneous radiation fields on this motion. The diffusion coefficients in longitudinal momentum of electrons are found. It is shown that in initially monoenergetic electron beam a mean square spread due to influence of the incoherent fields on electron motion may have a predominant effect compared with the spread caused by the quantum fluctuations.