Self-truncated ionization injection and consequent monoenergetic electron bunches in laser wakefield acceleration

Ming Zeng, Min Chen, Zheng-Ming Sheng, Warren B. Mori, Jie Zhang

Research output: Contribution to journalArticle

31 Citations (Scopus)
131 Downloads (Pure)

Abstract

The ionization-induced injection in laser wakefield acceleration has been recently demonstrated to be a promising injection scheme. However, the energy spread controlling in this mechanism remains a challenge because continuous injection in a mixed gas target is usually inevitable. Here, we propose that by use of certain initially unmatched laser pulses, the electron injection can be constrained to the very front region of the mixed gas target, typically in a length of a few hundreds micrometers determined by the laser self-focusing and the wake deformation. As a result, the produced electron beam has narrow energy spread and meanwhile contains tens of pC in charge. Both multidimensional simulations and theoretical analysis illustrate the effectiveness of this scheme.

Original languageEnglish
Article number030701
Number of pages5
JournalPhysics of Plasmas
Volume21
Issue number3
Early online date11 Mar 2014
DOIs
Publication statusPublished - 2014

Fingerprint

injection
ionization
lasers
electrons
self focusing
gases
wakes
micrometers
electron beams
energy
pulses
simulation

Keywords

  • charge injection
  • ionization
  • electron beams

Cite this

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abstract = "The ionization-induced injection in laser wakefield acceleration has been recently demonstrated to be a promising injection scheme. However, the energy spread controlling in this mechanism remains a challenge because continuous injection in a mixed gas target is usually inevitable. Here, we propose that by use of certain initially unmatched laser pulses, the electron injection can be constrained to the very front region of the mixed gas target, typically in a length of a few hundreds micrometers determined by the laser self-focusing and the wake deformation. As a result, the produced electron beam has narrow energy spread and meanwhile contains tens of pC in charge. Both multidimensional simulations and theoretical analysis illustrate the effectiveness of this scheme.",
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Self-truncated ionization injection and consequent monoenergetic electron bunches in laser wakefield acceleration. / Zeng, Ming; Chen, Min; Sheng, Zheng-Ming; Mori, Warren B.; Zhang, Jie.

In: Physics of Plasmas, Vol. 21, No. 3, 030701, 2014.

Research output: Contribution to journalArticle

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AU - Chen, Min

AU - Sheng, Zheng-Ming

AU - Mori, Warren B.

AU - Zhang, Jie

N1 - Copyright (2014) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Phys. Plasmas 21, 030701 (2014) and may be found at (http://dx.doi.org/10.1063/1.4868404).

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N2 - The ionization-induced injection in laser wakefield acceleration has been recently demonstrated to be a promising injection scheme. However, the energy spread controlling in this mechanism remains a challenge because continuous injection in a mixed gas target is usually inevitable. Here, we propose that by use of certain initially unmatched laser pulses, the electron injection can be constrained to the very front region of the mixed gas target, typically in a length of a few hundreds micrometers determined by the laser self-focusing and the wake deformation. As a result, the produced electron beam has narrow energy spread and meanwhile contains tens of pC in charge. Both multidimensional simulations and theoretical analysis illustrate the effectiveness of this scheme.

AB - The ionization-induced injection in laser wakefield acceleration has been recently demonstrated to be a promising injection scheme. However, the energy spread controlling in this mechanism remains a challenge because continuous injection in a mixed gas target is usually inevitable. Here, we propose that by use of certain initially unmatched laser pulses, the electron injection can be constrained to the very front region of the mixed gas target, typically in a length of a few hundreds micrometers determined by the laser self-focusing and the wake deformation. As a result, the produced electron beam has narrow energy spread and meanwhile contains tens of pC in charge. Both multidimensional simulations and theoretical analysis illustrate the effectiveness of this scheme.

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