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Record 1 of 54
Spontaneous radiation from relativistic electrons in a tapered undulator
Author and Affiliation:
Bosco, P.(California Univ., Santa Barbara, CA, United States)
Colson, W. B.(California, University, Santa Barbara, CA, United States)
Abstract: The spectrum, angular distribution, polarization, and coherence properties of the radiation emitted by relativistic electrons undulating through a quasiperiodic tapered magnetic field are studied. Tapering the wavelength and/or field strength along the undulator's axis has the effect of spreading the spectral line to higher frequencies; interference over this broader spectral range results in a more complex line shape. The angular dependence, on the other hand, is not affected by the amount of taper. The polarization of the radiation in the forward direction is determined by the transverse polarization of the undulator, but the polarization changes off axis. The radiation patterns predicted here are distinct from those of untapered undulators and their detection is now feasible. They will provide useful diagnostics of electron trajectories and threshold behavior in free-electron-laser oscillators using tapered undulators.
Publication Date: Jul 01, 1983
Document ID:
19830059192
(Acquired Nov 30, 1995)
Accession Number: 83A40410
Subject Category: NUCLEAR AND HIGH-ENERGY PHYSICS
Document Type: Journal Article
Publication Information: Physical Review A - General Physics, 3rd Series; p. July 198; (ISSN 0556-2791); 28
Publisher Information: United States
Contract/Grant/Task Num: AF-AFOSR-81-0061; NAG2-48
Financial Sponsor: NASA; United States
Organization Source: California Univ.; Santa Barbara, CA, United States
Description: 9p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ELECTRON TRAJECTORIES; FREE ELECTRON LASERS; POLARIZED ELECTROMAGNETIC RADIATION; RADIATION SPECTRA; RELATIVISTIC ELECTRON BEAMS; SPONTANEOUS EMISSION; ANGULAR DISTRIBUTION; EMISSION SPECTRA; LIENARD POTENTIAL; LINEAR POLARIZATION
Imprint And Other Notes: Physical Review A - General Physics, 3rd Series (ISSN 0556-2791), vol. 28, July 1983, p. 319-327.
Miscellaneous Notes: p. 319-327
Availability Source: Other Sources
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