Multi-chromatic narrow-energy-spread electron bunches from laser wakefield acceleration with dual color lasers

M. Zeng, M. Chen, L. L. Yu, W. B. Mori, Z. M. Sheng, B. Hidding, D. Jaroszynski, J. Zhang

Research output: Contribution to journalArticle

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Abstract

A method based on laser wakefield acceleration with controlled ionization injection triggered by another frequency-tripled laser is proposed, which can produce electron bunches with low energy spread. As two color pulses co-propagate in the background plasma, the peak amplitude of the combined laser field is modulated in time and space during the laser propagation due to the plasma dispersion. Ionization injection occurs when the peak amplitude exceeds certain threshold. The threshold is exceeded for limited duration periodically at different propagation distances, leading to multiple ionization injections and separated electron bunches. The method is demonstrated through multi-dimensional particle-in-cell simulations. Such electron bunches may be used to generate multi-chromatic X-ray sources for a variety of applications.
Original languageEnglish
Article number084801
JournalPhysical Review Letters
Volume114
Issue number8
Early online date24 Feb 2015
DOIs
Publication statusPublished - 27 Feb 2015

Fingerprint

color
injection
ionization
lasers
electrons
plasma diffusion
thresholds
propagation
energy
pulses
cells
x rays
simulation

Keywords

  • electron bunches
  • laser wakefield acceleration
  • dual colour lasers
  • laser propagation
  • multi-chromatic X-ray sources

Cite this

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title = "Multi-chromatic narrow-energy-spread electron bunches from laser wakefield acceleration with dual color lasers",
abstract = "A method based on laser wakefield acceleration with controlled ionization injection triggered by another frequency-tripled laser is proposed, which can produce electron bunches with low energy spread. As two color pulses co-propagate in the background plasma, the peak amplitude of the combined laser field is modulated in time and space during the laser propagation due to the plasma dispersion. Ionization injection occurs when the peak amplitude exceeds certain threshold. The threshold is exceeded for limited duration periodically at different propagation distances, leading to multiple ionization injections and separated electron bunches. The method is demonstrated through multi-dimensional particle-in-cell simulations. Such electron bunches may be used to generate multi-chromatic X-ray sources for a variety of applications.",
keywords = "electron bunches, laser wakefield acceleration, dual colour lasers, laser propagation, multi-chromatic X-ray sources",
author = "M. Zeng and M. Chen and Yu, {L. L.} and Mori, {W. B.} and Sheng, {Z. M.} and B. Hidding and D. Jaroszynski and J. Zhang",
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doi = "10.1103/PhysRevLett.114.084801",
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Multi-chromatic narrow-energy-spread electron bunches from laser wakefield acceleration with dual color lasers. / Zeng, M.; Chen, M.; Yu, L. L.; Mori, W. B.; Sheng, Z. M.; Hidding, B.; Jaroszynski, D.; Zhang, J.

In: Physical Review Letters, Vol. 114, No. 8, 084801, 27.02.2015.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Multi-chromatic narrow-energy-spread electron bunches from laser wakefield acceleration with dual color lasers

AU - Zeng, M.

AU - Chen, M.

AU - Yu, L. L.

AU - Mori, W. B.

AU - Sheng, Z. M.

AU - Hidding, B.

AU - Jaroszynski, D.

AU - Zhang, J.

N1 - (c) American Physical Society

PY - 2015/2/27

Y1 - 2015/2/27

N2 - A method based on laser wakefield acceleration with controlled ionization injection triggered by another frequency-tripled laser is proposed, which can produce electron bunches with low energy spread. As two color pulses co-propagate in the background plasma, the peak amplitude of the combined laser field is modulated in time and space during the laser propagation due to the plasma dispersion. Ionization injection occurs when the peak amplitude exceeds certain threshold. The threshold is exceeded for limited duration periodically at different propagation distances, leading to multiple ionization injections and separated electron bunches. The method is demonstrated through multi-dimensional particle-in-cell simulations. Such electron bunches may be used to generate multi-chromatic X-ray sources for a variety of applications.

AB - A method based on laser wakefield acceleration with controlled ionization injection triggered by another frequency-tripled laser is proposed, which can produce electron bunches with low energy spread. As two color pulses co-propagate in the background plasma, the peak amplitude of the combined laser field is modulated in time and space during the laser propagation due to the plasma dispersion. Ionization injection occurs when the peak amplitude exceeds certain threshold. The threshold is exceeded for limited duration periodically at different propagation distances, leading to multiple ionization injections and separated electron bunches. The method is demonstrated through multi-dimensional particle-in-cell simulations. Such electron bunches may be used to generate multi-chromatic X-ray sources for a variety of applications.

KW - electron bunches

KW - laser wakefield acceleration

KW - dual colour lasers

KW - laser propagation

KW - multi-chromatic X-ray sources

UR - http://arxiv.org/abs/1406.7106

UR - http://journals.aps.org/prl/

U2 - 10.1103/PhysRevLett.114.084801

DO - 10.1103/PhysRevLett.114.084801

M3 - Article

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JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

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