Undulator radiation in a periodic magnetic field with a constant component

Journal Article · Mon Dec 15 04:00:00 EST 2008 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3039094· OSTI ID:21180059

Dattoli, G ^[1]; Mikhailin, V V; Zhukovsky, K V ^[2]

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1. Gruppo Fisica Teorica e Matematica Applicata Unita Tecnico Scientifica Tecnologie Fisiche Avanzante (FIS-MAT), ENEA-Centro Ricerche Frascati, Via Enrico Fermi 45, I-00044 Frascati, Rome (Italy)
2. Department of Optics and Spectroscopy, Faculty of Physics, M. V. Lomonosov Moscow State University, Moscow 119991 (Russian Federation)

We present an analytical investigation of radiation emitted by an electron moving in a planar undulator with a constant magnetic field component added to the periodic one. In order to calculate the spectrum and angular distribution of radiation, we use the technique of generalized Bessel functions. In particular, this method is effectively applied for the study of the influence of the constant magnetic field on the undulator radiation emitted both along and off its axis. The analytical formulation of the effect of the weak constant field enables us to estimate its critical magnitude that may produce a significant distortion in the undulator radiation distributions.

• OSTI ID: 21180059
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 12 Vol. 104; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANGULAR DISTRIBUTION
BESSEL FUNCTIONS
ELECTRODYNAMICS
ELECTRON BEAMS
ELECTRON EMISSION
ELECTRONS
MAGNETIC FIELDS
PERIODICITY
WIGGLER MAGNETS