Synchrotron radiation from electron beams in plasma focusing channels

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Spontaneous radiation emitted from relativistic electrons undergoing betatron motion in a plasma focusing channel is analyzed and application to plasma wakefield accelerator experiments and to the ion channel laser (ICL) are discussed. Important similarities and differences between a free electron laser (FEL) and an ICL are delineated. It is shown that the frequency of spontaneous radiation is a strong function of the betatron strength parameter alpha-beta, which plays a similar role to that of the wiggler strength parameter in a conventional FEL. For alpha-beta > 1, radiation is emitted in numerous harmonics. Furthermore, alpha-beta is proportional to the amplitude of ... continued below

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Esarey, E.; Shadwick, B.A.; Catravas, P. & Leemans, W.P. December 6, 2001.

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Description

Spontaneous radiation emitted from relativistic electrons undergoing betatron motion in a plasma focusing channel is analyzed and application to plasma wakefield accelerator experiments and to the ion channel laser (ICL) are discussed. Important similarities and differences between a free electron laser (FEL) and an ICL are delineated. It is shown that the frequency of spontaneous radiation is a strong function of the betatron strength parameter alpha-beta, which plays a similar role to that of the wiggler strength parameter in a conventional FEL. For alpha-beta > 1, radiation is emitted in numerous harmonics. Furthermore, alpha-beta is proportional to the amplitude of the betatron orbit, which varies for every electron in the beam. The radiation spectrum emitted from an electron beam is calculated by averaging the single electron spectrum over the electron distribution. This leads to a frequency broadening of the radiation spectrum, which places serious limits on the possibility of realizing an ICL.

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  • Journal Name: Physical Review E; Journal Volume: 65; Journal Issue: 5; Other Information: Journal Publication Date: May 2002

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  • Report No.: LBNL--49775
  • Report No.: CBP Note-416
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 797847
  • Archival Resource Key: ark:/67531/metadc738456

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  • December 6, 2001

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  • Oct. 19, 2015, 7:39 p.m.

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  • Sept. 1, 2016, 7:16 p.m.

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Esarey, E.; Shadwick, B.A.; Catravas, P. & Leemans, W.P. Synchrotron radiation from electron beams in plasma focusing channels, article, December 6, 2001; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc738456/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.