scholarly journals Quasi-monoenergetic electron beams produced by colliding cross-polarized laser pulses in underdense plasmas

2009 ◽  
Vol 11 (1) ◽  
pp. 013011 ◽  
Author(s):  
C Rechatin ◽  
J Faure ◽  
A Lifschitz ◽  
X Davoine ◽  
E Lefebvre ◽  
...  
Keyword(s):  
Electron Beams ◽  
Laser Pulses ◽  
Monoenergetic Electron ◽  
Underdense Plasmas

scholarly journals Quasi-monoenergetic electron beams generated from 7 TW laser pulses in N2 and He gas targets

2008 ◽  
Vol 26 (2) ◽  
pp. 147-155 ◽  
Author(s):  
Z.L. Chen ◽  
C. Unick ◽  
N. Vafaei-Najafabadi ◽  
Y.Y. Tsui ◽  
R. Fedosejevs ◽  
...  
Keyword(s):  
Pulse Compression ◽  
Electron Beams ◽  
Strong Electric Field ◽  
Laser Pulses ◽  
High Energy ◽  
Monoenergetic Electron ◽  
Electron Bunches ◽  
Helium Gas ◽  
Gas Targets ◽  
Gas Interactions

AbstractQuasi-monoenergetic electron beams of energies 12 MeV to over 200 MeV are generated from both nitrogen and helium gas targets with 7TW laser pulses. Typically nitrogen gas interactions lead to electron bunches in the range of 12 to 50 MeV varying from shot to shot. Helium gas leads to higher energy electron bunches from 25 to 100 MeV. Occasionally exceptionally high energy bunches of electrons up to 200 MeV are observed from nitrogen and helium. Initial full two-dimensional simulations indicate the production of 20–30 MeV electron energy bunches for the typical interaction conditions as the electrons are injected from wave breaking in the plasma wake behind the laser pulse and injected into the strong electric field gradient propagating with the optical pulse. This is consistent with the experimental observations from the majority of shots. Pulse compression during propagation in the high density plasma does not allow the threshold conditions for the full bubble regime to be reached. However, the electric acceleration field in the wakefield cavity is still sufficient to lead to the formation of a bunch of electrons with an energy peak in the range of 20 to 30 MeV. In order to explain the occasional high energy shots most likely 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.

scholarly journals Generation of quasi-monoenergetic electron beams using ultrashort and ultraintense laser pulses

2005 ◽  
Vol 23 (2) ◽  
pp. 161-166 ◽  
Author(s):  
Y. GLINEC ◽  
J. FAURE ◽  
A. PUKHOV ◽  
S. KISELEV ◽  
S. GORDIENKO ◽  
...  
Keyword(s):  
Electric Fields ◽  
Electron Beams ◽  
Laser Pulses ◽  
Poor Quality ◽  
Monoenergetic Electron ◽  
Plasma Bubble ◽  
Laser Plasma Interaction ◽  
Ultrashort Laser ◽  
Monoenergetic Electron Beam

Plasma-based accelerators have been proposed for the next generation of compact accelerators because of the huge electric fields they can support. However, it has been difficult to use them efficiently for applications because they produce poor quality particle beams with large energy spreads. Here, we demonstrate a dramatic enhancement in the quality of electron beams produced in laser-plasma interaction: an ultrashort laser pulse drives a plasma bubble which traps and accelerates plasma electrons to a single energy. This produces an extremely collimated and quasi-monoenergetic electron beam with a high charge of 0.5 nanocoulomb at energy 170 ± 20 MeV.

TAPERED WIGGLER FREE ELECTRON LASERS DRIVEN BY NON-MONOENERGETIC ELECTRON BEAMS

1983 ◽  
Vol 44 (C1) ◽  
pp. C1-371-C1-371 ◽  
Author(s):  
J. C. Goldstein ◽  
W. B. Colson ◽  
R. W. Warren
Keyword(s):  
Free Electron ◽  
Electron Beams ◽  
Free Electron Lasers ◽  
Monoenergetic Electron

scholarly journals Control of quasi-monoenergetic electron beams from laser-plasma accelerators with adjustable shock density profile

2018 ◽  
Vol 25 (4) ◽  
pp. 043107 ◽  
Author(s):  
Hai-En Tsai ◽  
Kelly K. Swanson ◽  
Sam K. Barber ◽  
Remi Lehe ◽  
Hann-Shin Mao ◽  
...  
Keyword(s):  
Density Profile ◽  
Laser Plasma ◽  
Electron Beams ◽  
Monoenergetic Electron ◽  
Shock Density ◽  
Plasma Accelerators

Ultrahigh brightness attosecond electron beams from intense X-ray laser driven plasma photocathode

2019 ◽  
Vol 34 (34) ◽  
pp. 1943012 ◽  
Author(s):  
Ronghao Hu ◽  
Zheng Gong ◽  
Jinqing Yu ◽  
Yinren Shou ◽  
Meng Lv ◽  
...  
Keyword(s):  
Electron Beams ◽  
Laser Pulses ◽  
Laser Wakefield Acceleration ◽  
X Ray ◽  
Electron Sources ◽  
Research Areas ◽  
Wakefield Acceleration ◽  
Laser Wakefield ◽  
Liquid Methane ◽  
Present Simulation

The emerging intense attosecond X-ray lasers can extend the Laser Wakefield Acceleration mechanism to higher plasma densities in which the acceleration gradients are greatly enhanced. Here we present simulation results of high quality electron acceleration driven by intense attosecond X-ray laser pulses in liquid methane. Ultrahigh brightness electron beams can be generated with 5-dimensional beam brightness over [Formula: see text]. The pulse duration of the electron bunch can be shorter than 20 as. Such unique electron sources can benefit research areas requiring crucial spatial and temporal resolutions.

scholarly journals Generation of tunable, 100–800 MeV quasi-monoenergetic electron beams from a laser-wakefield accelerator in the blowout regime

2012 ◽  
Vol 19 (5) ◽  
pp. 056703 ◽  
Author(s):  
S. Banerjee ◽  
N. D. Powers ◽  
V. Ramanathan ◽  
I. Ghebregziabher ◽  
K. J. Brown ◽  
...  
Keyword(s):  
Electron Beams ◽  
Monoenergetic Electron ◽  
Laser Wakefield ◽  
Wakefield Accelerator ◽  
Laser Wakefield Accelerator
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