Analysis of radial and longitudinal field of plasma wakefield generated by a Laguerre-Gauss laser pulse

2016 ◽  
Vol 23 (6) ◽  
pp. 063102 ◽  
Author(s):  
Ali Shekari Firouzjaei ◽  
Babak Shokri
Keyword(s):  
Laser Pulse ◽  
Longitudinal Field ◽  
Plasma Wakefield

scholarly journals Radial density profile and stability of capillary discharge plasma waveguides of lengths up to 40 cm

2021 ◽  
Vol 9 ◽  
Author(s):  
M. Turner ◽  
A. J. Gonsalves ◽  
S. S. Bulanov ◽  
C. Benedetti ◽  
N. A. Bobrova ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Electron Density ◽  
Density Profile ◽  
Pulse Propagation ◽  
Spot Size ◽  
Capillary Discharge ◽  
Electron Density Profile ◽  
Plasma Waveguide ◽  
Wakefield Acceleration ◽  
Plasma Wakefield

Abstract We measured the parameter reproducibility and radial electron density profile of capillary discharge waveguides with diameters of 650 $\mathrm{\mu} \mathrm{m}$ to 2 mm and lengths of 9 to 40 cm. To the best of the authors’ knowledge, 40 cm is the longest discharge capillary plasma waveguide to date. This length is important for $\ge$ 10 GeV electron energy gain in a single laser-driven plasma wakefield acceleration stage. Evaluation of waveguide parameter variations showed that their focusing strength was stable and reproducible to $<0.2$ % and their average on-axis plasma electron density to $<1$ %. These variations explain only a small fraction of laser-driven plasma wakefield acceleration electron bunch variations observed in experiments to date. Measurements of laser pulse centroid oscillations revealed that the radial channel profile rises faster than parabolic and is in excellent agreement with magnetohydrodynamic simulation results. We show that the effects of non-parabolic contributions on Gaussian pulse propagation were negligible when the pulse was approximately matched to the channel. However, they affected pulse propagation for a non-matched configuration in which the waveguide was used as a plasma telescope to change the focused laser pulse spot size.

scholarly journals CONTROL OF CHARACTERISTICS OF SELF-INJECTED AND ACCELERATED ELECTRON BUNCH IN PLASMA BY LASER PULSE SHAPING ON RADIUS, INTENSITY AND SHAPE

2019 ◽  
pp. 39-42
Author(s):  
V.I. Maslov ◽  
D.S. Bondar ◽  
V. Grigorencko ◽  
I.P. Levchuk ◽  
I.N. Onishchenko
Keyword(s):  
Laser Pulse ◽  
Pulse Shaping ◽  
Electron Bunch ◽  
The Self ◽  
Energy Spread ◽  
Small Energy ◽  
Laser Acceleration ◽  
Laser Pulse Shaping ◽  
Plasma Wakefield

At the laser acceleration of self-injected electron bunch by plasma wakefield it is important to form bunch with small energy spread and small size. It has been shown that laser-pulse shaping on radius, intensity and shape controls characteristics of the self-injected electron bunch and provides at certain shaping small energy spread and small size of self-injected and accelerated electron bunch.

scholarly journals Analysis on the longitudinal field strength formed by tightly-focused radially-polarized femtosecond petawatt laser pulse

2018 ◽  
Vol 26 (25) ◽  
pp. 33091 ◽  
Author(s):  
Tae Moon Jeong ◽  
Sergei Bulanov ◽  
Stefan Weber ◽  
Georg Korn
Keyword(s):  
Laser Pulse ◽  
Field Strength ◽  
Longitudinal Field ◽  
Radially Polarized

scholarly journals Observation of quasi mono-energetic electron bunches in the new ellipsoid cavity model

2009 ◽  
Vol 27 (2) ◽  
pp. 223-231 ◽  
Author(s):  
R. Sadighi-Bonabi ◽  
H.A. Navid ◽  
P. Zobdeh
Keyword(s):  
Laser Pulse ◽  
Plasma Channel ◽  
Energetic Electron ◽  
Electron Trajectory ◽  
Cavity Model ◽  
Electron Bunches ◽  
Fs Laser ◽  
New Ellipsoid ◽  
Plasma Wakefield

AbstractIn this work, we introduce a new ellipsoid model to describe bubble acceleration of electrons and discuss the required conditions of forming it. We have found that the electron trajectory is strongly related to background electron energy and cavity potential ratio. In the ellipsoid cavity regime, the quality of the electron beam is improved in contrast to other methods, such as that using periodic plasma wakefield, spherical cavity regime, and plasma channel guided acceleration. The trajectory of the electron motion can be described as hyperbola, parabola, or ellipsoid path. It is influenced by the position and energy of the electrons and the electrostatic potential of the cavity. In the experimental part of this work, a 20 TW power and 30 fs laser pulse was focused on a pulsed He gas jet. We have focused the laser pulse in the best matched point above the nozzle gas to obtain a stable ellipsoid bubble. The finding of the optimum points will be described in analytical details.

scholarly journals Electron acceleration in the wakefield of asymmetric laser pulses

2009 ◽  
Vol 27 (1) ◽  
pp. 27-32 ◽  
Author(s):  
B.-S. Xie ◽  
A. Aimidula ◽  
J.-S. Niu ◽  
J. Liu ◽  
M.Y. Yu
Keyword(s):  
Laser Pulse ◽  
Scaling Law ◽  
Laser Pulses ◽  
Electron Acceleration ◽  
Maximum Energy ◽  
Linear Scaling ◽  
Electron Dynamics ◽  
Optimum Ratio ◽  
Accelerated Electrons ◽  
Plasma Wakefield

AbstractElectron acceleration in the plasma wakefield driven by asymmetric laser pulses is investigated analytically. It is found that the asymmetric laser pulse can significantly modify the phase portrait of the electron dynamics and enhance the maximum energy of the accelerated electrons. There exists an optimum ratio of the lengths of the rising and falling segments of the asymmetric laser-pulse. A linear scaling law relating the accelerated electrons' energy and the plasma density is obtained. This result differs from the power-law dependence often associated with symmetric laser pulses.

High-intensity few-cycle laser-pulse generation by the plasma-wakefield self-compression effect

2013 ◽  
Vol 87 (3) ◽  
Author(s):  
A. Pipahl ◽  
E. A. Anashkina ◽  
M. Toncian ◽  
T. Toncian ◽  
S. A. Skobelev ◽  
...  
Keyword(s):  
Laser Pulse ◽  
High Intensity ◽  
Pulse Generation ◽  
Compression Effect ◽  
Plasma Wakefield

Modulation of the Amplitude and Spatial Structure of the Plasma Wakefield With Super-Gaussian Chirped Laser Pulse

2020 ◽  
Vol 48 (4) ◽  
pp. 894-901
Author(s):  
Zheng-Wei Yao ◽  
Li-Hong Cheng ◽  
Xiao-Bo Zhang ◽  
Rong-An Tang ◽  
Ju-Kui Xue
Keyword(s):  
Laser Pulse ◽  
Spatial Structure ◽  
Plasma Wakefield ◽  
Chirped Laser Pulse
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