Journal ArticleDOI
Laser Electron Accelerator
Toshiki Tajima,John M. Dawson +1 more
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In this paper, an intense electromagnetic pulse can create a weak of plasma oscillations through the action of the nonlinear ponderomotive force, and electrons trapped in the wake can be accelerated to high energy.Abstract:
An intense electromagnetic pulse can create a weak of plasma oscillations through the action of the nonlinear ponderomotive force. Electrons trapped in the wake can be accelerated to high energy. Existing glass lasers of power density ${10}^{18}$W/${\mathrm{cm}}^{2}$ shone on plasmas of densities ${10}^{18}$ ${\mathrm{cm}}^{\ensuremath{-}3}$ can yield gigaelectronvolts of electron energy per centimeter of acceleration distance. This acceleration mechanism is demonstrated through computer simulation. Applications to accelerators and pulsers are examined.read more
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Journal ArticleDOI
Quasi-monoenergetic electron beams generated from 7 TW laser pulses in N2 and He gas targets
Z. L. Chen,C. Unick,N. Vafaei-Najafabadi,Ying Y. Tsui,Robert Fedosejevs,N. Naseri,Paul-Edouard Masson-Laborde,Wojciech Rozmus +7 more
TL;DR: In this paper, it was shown that a lower density channel created by the laser prepulse may occasionally form a natural low density electron guide channel giving ideal conditions for acceleration over much longer lengths leading to the high energies observed.
Journal ArticleDOI
Generation and Applications of Extreme-Ultraviolet Vortices
Carlos Hernandez-Garcia,Jorge Vieira,José Tito Mendonça,Laura Rego,Julio San Roman,Luis Plaja,Primoz Rebernik Ribič,David Gauthier,Antonio Picón +8 more
TL;DR: In this paper, the authors review the recent studies in the subject, and collect the major prospects of this emerging field and also focus on the unique and promising applications of ultrashort XUV/X-ray vortex pulses.
Journal ArticleDOI
On the behavior of ultraintense laser produced hot electrons in self-excited fields
T. Yabuuchi,K. Adumi,Hideaki Habara,Ryosuke Kodama,Kiminori Kondo,T. Tanimoto,Kazuo Tanaka,Yasuhiko Sentoku,Tetsuya Matsuoka,Z Chen,Motonobu Tampo,Anle Lei,Kunioki Mima +12 more
TL;DR: In this paper, the authors measured the hot electrons when a plasma was created on the target rear surface in advance and observed an increase of the electron number by a factor of 2. This increase may be due to changes in the electrostatic potential formation process with the rear plasma.
Journal ArticleDOI
Near-threshold electron injection in the laser-plasma wakefield accelerator leading to femtosecond bunches
M. R. Islam,Enrico Brunetti,Richard Shanks,Bernhard Ersfeld,Riju C. Issac,Silvia Cipiccia,Maria Pia Anania,Gregor H. Welsh,S. M. Wiggins,Adam Noble,R. A. Cairns,Gaurav Raj,Dino A. Jaroszynski +12 more
TL;DR: In this paper, it was shown that the localized charge density build-up in the sheath crossing region at the rear of the bubble has the effect of increasing the accelerating potential to above a critical value, which explains why single or multiple ultra short electron bunches with little dark current are formed in the first bubble.
Journal ArticleDOI
Transverse self-modulation of ultra-relativistic lepton beams in the plasma wakefield accelerator
TL;DR: In this article, the transverse self-modulation of ultrarelativistic, long lepton bunches in high-density plasmas is explored through full-scale particle-in-cell simulations.