Acceleration and radiation of externally injected electrons in laser plasma wakefield driven by a Laguerre-Gaussian pulse

Zhong-Chen Shen, Min Chen, Guo-Bo Zhang, Ji Luo, Su-Ming Weng, Xiao-Hui Yuan, Feng Liu, Zheng-Ming Sheng

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

By using three-dimensional particle-in-cell simulations, externally injected electron beam acceleration and radiation in donut-like wake fields driven by a LaguerreGaussian pulse are investigated. Studies show that in the acceleration process the total charge and azimuthal momenta of electrons can be stably maintained at a distance of a few hundreds of micrometers. Electrons experience low-frequency spiral rotation and high-frequency betatron oscillation, which leads to a synchrotron-like radiation. The radiation spectrum is mainly determined by the betatron motion of electrons. The far field distribution of radiation intensity shows axial symmetry due to the uniform transverse injection and spiral rotation of electrons. Our studies suggest a new way to simultaneously generate hollow electron beam and radiation source from a compact laser plasma accelerator.

LanguageEnglish
Article number115204
Number of pages5
JournalChinese Physics B
Volume26
Issue number11
Early online date29 Sep 2017
DOIs
Publication statusPublished - 30 Nov 2017

Fingerprint

laser plasmas
betatrons
radiation
pulses
electrons
electron beams
plasma accelerators
radiation spectra
radiation sources
wakes
far fields
radiant flux density
micrometers
hollow
synchrotron radiation
injection
low frequencies
momentum
oscillations
symmetry

Keywords

  • Laguerre-Gaussian pulse
  • laser plasma accelerator
  • particle-in-cell simulations

Cite this

Shen, Zhong-Chen ; Chen, Min ; Zhang, Guo-Bo ; Luo, Ji ; Weng, Su-Ming ; Yuan, Xiao-Hui ; Liu, Feng ; Sheng, Zheng-Ming. / Acceleration and radiation of externally injected electrons in laser plasma wakefield driven by a Laguerre-Gaussian pulse. In: Chinese Physics B. 2017 ; Vol. 26, No. 11.
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abstract = "By using three-dimensional particle-in-cell simulations, externally injected electron beam acceleration and radiation in donut-like wake fields driven by a LaguerreGaussian pulse are investigated. Studies show that in the acceleration process the total charge and azimuthal momenta of electrons can be stably maintained at a distance of a few hundreds of micrometers. Electrons experience low-frequency spiral rotation and high-frequency betatron oscillation, which leads to a synchrotron-like radiation. The radiation spectrum is mainly determined by the betatron motion of electrons. The far field distribution of radiation intensity shows axial symmetry due to the uniform transverse injection and spiral rotation of electrons. Our studies suggest a new way to simultaneously generate hollow electron beam and radiation source from a compact laser plasma accelerator.",
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Acceleration and radiation of externally injected electrons in laser plasma wakefield driven by a Laguerre-Gaussian pulse. / Shen, Zhong-Chen; Chen, Min; Zhang, Guo-Bo; Luo, Ji; Weng, Su-Ming; Yuan, Xiao-Hui; Liu, Feng; Sheng, Zheng-Ming.

In: Chinese Physics B, Vol. 26, No. 11, 115204, 30.11.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Acceleration and radiation of externally injected electrons in laser plasma wakefield driven by a Laguerre-Gaussian pulse

AU - Shen, Zhong-Chen

AU - Chen, Min

AU - Zhang, Guo-Bo

AU - Luo, Ji

AU - Weng, Su-Ming

AU - Yuan, Xiao-Hui

AU - Liu, Feng

AU - Sheng, Zheng-Ming

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N2 - By using three-dimensional particle-in-cell simulations, externally injected electron beam acceleration and radiation in donut-like wake fields driven by a LaguerreGaussian pulse are investigated. Studies show that in the acceleration process the total charge and azimuthal momenta of electrons can be stably maintained at a distance of a few hundreds of micrometers. Electrons experience low-frequency spiral rotation and high-frequency betatron oscillation, which leads to a synchrotron-like radiation. The radiation spectrum is mainly determined by the betatron motion of electrons. The far field distribution of radiation intensity shows axial symmetry due to the uniform transverse injection and spiral rotation of electrons. Our studies suggest a new way to simultaneously generate hollow electron beam and radiation source from a compact laser plasma accelerator.

AB - By using three-dimensional particle-in-cell simulations, externally injected electron beam acceleration and radiation in donut-like wake fields driven by a LaguerreGaussian pulse are investigated. Studies show that in the acceleration process the total charge and azimuthal momenta of electrons can be stably maintained at a distance of a few hundreds of micrometers. Electrons experience low-frequency spiral rotation and high-frequency betatron oscillation, which leads to a synchrotron-like radiation. The radiation spectrum is mainly determined by the betatron motion of electrons. The far field distribution of radiation intensity shows axial symmetry due to the uniform transverse injection and spiral rotation of electrons. Our studies suggest a new way to simultaneously generate hollow electron beam and radiation source from a compact laser plasma accelerator.

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KW - laser plasma accelerator

KW - particle-in-cell simulations

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