Ponderomotive scattering of an electron-bunch before injection into a laser wakefield

A.G. Khachatryan, M.J.H. Luttikhof, F.A. van Goor, Klaus J. Boller

Research output: Non-textual formWeb publication/siteOther research output

Abstract

For the purpose of laser wakefield acceleration, it turned out that also the injection of electron bunches longer than a plasma wavelength can generate accelerated femtosecond bunches with relatively low energy spread. This is of high interest because such injecting bunches can be provided, e.g., by state-of-the-art photo cathode RF guns. Here we point out that when an e-bunch is injected in the wakefield it is important to take into account the ponderomotive scattering of the injecting bunch by the laser pulse in the vacuum region located in front of the plasma. At low energies of the injected bunch this scattering results in a significant drop of the collection efficiency. Larger collection efficiency can by reached with lower intensity laser pulses and relatively high injection energies. We also estimate the minimum trapping energy for the injected electrons and the length of the trapped bunch.
Original languageEnglish
Place of PublicationIthaca, New York
PublisherCornell University
Publication statusPublished - 2006

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injection
scattering
lasers
electrons
energy
pulses
cathodes
trapping
vacuum
estimates
wavelengths

Keywords

  • METIS-233944

Cite this

Khachatryan, A. G. (Author), Luttikhof, M. J. H. (Author), van Goor, F. A. (Author), & Boller, K. J. (Author). (2006). Ponderomotive scattering of an electron-bunch before injection into a laser wakefield. Web publication/site, Ithaca, New York: Cornell University. Retrieved from http://arxiv.org/ftp/physics/papers/0607/0607072.pdf
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abstract = "For the purpose of laser wakefield acceleration, it turned out that also the injection of electron bunches longer than a plasma wavelength can generate accelerated femtosecond bunches with relatively low energy spread. This is of high interest because such injecting bunches can be provided, e.g., by state-of-the-art photo cathode RF guns. Here we point out that when an e-bunch is injected in the wakefield it is important to take into account the ponderomotive scattering of the injecting bunch by the laser pulse in the vacuum region located in front of the plasma. At low energies of the injected bunch this scattering results in a significant drop of the collection efficiency. Larger collection efficiency can by reached with lower intensity laser pulses and relatively high injection energies. We also estimate the minimum trapping energy for the injected electrons and the length of the trapped bunch.",
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Khachatryan, AG, Luttikhof, MJH, van Goor, FA & Boller, KJ, Ponderomotive scattering of an electron-bunch before injection into a laser wakefield, 2006, Web publication/site, Cornell University, Ithaca, New York.
Ponderomotive scattering of an electron-bunch before injection into a laser wakefield. Khachatryan, A.G. (Author); Luttikhof, M.J.H. (Author); van Goor, F.A. (Author); Boller, Klaus J. (Author). 2006. Ithaca, New York : Cornell University.

Research output: Non-textual formWeb publication/siteOther research output

TY - ADVS

T1 - Ponderomotive scattering of an electron-bunch before injection into a laser wakefield

AU - Khachatryan, A.G.

AU - Luttikhof, M.J.H.

AU - van Goor, F.A.

AU - Boller, Klaus J.

PY - 2006

Y1 - 2006

N2 - For the purpose of laser wakefield acceleration, it turned out that also the injection of electron bunches longer than a plasma wavelength can generate accelerated femtosecond bunches with relatively low energy spread. This is of high interest because such injecting bunches can be provided, e.g., by state-of-the-art photo cathode RF guns. Here we point out that when an e-bunch is injected in the wakefield it is important to take into account the ponderomotive scattering of the injecting bunch by the laser pulse in the vacuum region located in front of the plasma. At low energies of the injected bunch this scattering results in a significant drop of the collection efficiency. Larger collection efficiency can by reached with lower intensity laser pulses and relatively high injection energies. We also estimate the minimum trapping energy for the injected electrons and the length of the trapped bunch.

AB - For the purpose of laser wakefield acceleration, it turned out that also the injection of electron bunches longer than a plasma wavelength can generate accelerated femtosecond bunches with relatively low energy spread. This is of high interest because such injecting bunches can be provided, e.g., by state-of-the-art photo cathode RF guns. Here we point out that when an e-bunch is injected in the wakefield it is important to take into account the ponderomotive scattering of the injecting bunch by the laser pulse in the vacuum region located in front of the plasma. At low energies of the injected bunch this scattering results in a significant drop of the collection efficiency. Larger collection efficiency can by reached with lower intensity laser pulses and relatively high injection energies. We also estimate the minimum trapping energy for the injected electrons and the length of the trapped bunch.

KW - METIS-233944

M3 - Web publication/site

PB - Cornell University

CY - Ithaca, New York

ER -

Khachatryan AG (Author), Luttikhof MJH (Author), van Goor FA (Author), Boller KJ (Author). Ponderomotive scattering of an electron-bunch before injection into a laser wakefield Ithaca, New York: Cornell University. 2006.