Trapping and dark current in plasma-based accelerators

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The trapping of thermal electrons in a nonlinear plasma wave of arbitrary phase velocity is investigated. The threshold plasma wave amplitude for trapping plasma electrons is calculated, thereby determining the fraction trapped and the expected dark current in a plasma-based accelerator. It is shown that the presence of a laser field (e.g., trapping in the self-modulated regime of the laser wakefield accelerator) increases the trapping threshold. Implications for experimental and numerical laser-plasma studies are discussed.

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Schroder, C.B.; Esarey, E.; Shadwick, B.A. & Leemans, W.P. June 1, 2004.

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Description

The trapping of thermal electrons in a nonlinear plasma wave of arbitrary phase velocity is investigated. The threshold plasma wave amplitude for trapping plasma electrons is calculated, thereby determining the fraction trapped and the expected dark current in a plasma-based accelerator. It is shown that the presence of a laser field (e.g., trapping in the self-modulated regime of the laser wakefield accelerator) increases the trapping threshold. Implications for experimental and numerical laser-plasma studies are discussed.

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  • 11th Advanced Accelerator Concepts Workshop 2004,Stony Brook, NY, June 21 - 26, 2004

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  • Report No.: LBNL--56571
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 860773
  • Archival Resource Key: ark:/67531/metadc780635

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Office of Scientific & Technical Information Technical Reports

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  • June 1, 2004

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • Sept. 21, 2017, 7:12 p.m.

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Schroder, C.B.; Esarey, E.; Shadwick, B.A. & Leemans, W.P. Trapping and dark current in plasma-based accelerators, article, June 1, 2004; (digital.library.unt.edu/ark:/67531/metadc780635/: accessed November 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.