CYCLOTRON-RESONANCE IN A FEL WITH A SPIRAL UNDULATOR AND AN INVERSE AXIAL MAGNETIC-FIELD

Authors
KAMINSKY AA KAMINSKY AK KARBUSHEV NI SARANTSEV VP SEDYKH SN SERGEEV AP SILIVRA AA
Citation
Aa. Kaminsky et al., CYCLOTRON-RESONANCE IN A FEL WITH A SPIRAL UNDULATOR AND AN INVERSE AXIAL MAGNETIC-FIELD, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 331(1-3), 1993, pp. 531-534
Citations number
17
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
331
Issue
1-3
Year of publication
1993
Pages
531 - 534
Database
ISI
SICI code
0168-9002(1993)331:1-3<531:CIAFWA>2.0.ZU;2-U
Abstract
The electron motion in a FEL with a helical undulator and a longitudin al magnetic field is studied. It is shown that in the small pump appro ximation the electron motion in the transverse plane can be considered as a superposition of two counter circle gyrations. Therefore, the cy clotron resonances exist for both directions of a guide field. The ''a nticyclotron'' resonance (i.e. cyclotron resonance in the reversed gui de field) is caused by the transverse inhomogeneity of the undulator f ield and it appears only for off-axis electrons.