Electron Acceleration During the Mode Transition from Laser Wakefield to Plasma Wakefield Acceleration with a Dense-Plasma Wall

The wake bubble expansion and contraction by adding a dense-plasma wall in the background plasma during the mode transition from laser wakefield to plasma wakefield accel- eration is investigated by particle-in-cell simulations. The electrons are injected continuously into the cavity until the later...

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Published inPlasma science & technology Vol. 15; no. 9; pp. 841 - 844
Main Author 刘明萍 刘三秋 何俊 刘杰
Format Journal Article
LanguageEnglish
Published 01.09.2013
Subjects
Acceleration
Bubbles
Channels
Electron acceleration
Holes
Lasers
Particle in cell technique
Wakes
Walls
克菲尔
密集
尾波场
电子加速
等离子体激光
纵向收缩
转换过程
高能电子束
Online AccessGet full text
ISSN1009-0630
DOI10.1088/1009-0630/15/9/01

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Summary:The wake bubble expansion and contraction by adding a dense-plasma wall in the background plasma during the mode transition from laser wakefield to plasma wakefield accel- eration is investigated by particle-in-cell simulations. The electrons are injected continuously into the cavity until the lateral bubble size equals the inner diameter of the wall. The injected electron bunch from the laser wakefield acceleration （LWFA） scheme is quasi phase-stably accel- erated forward because of the longitudinal contraction of the bubble. After the laser pulse is depleted completely, the electron bunch generated from the LWFA scheme drives a plasma wake- field. The electrons remaining in the channel are trapped and accelerated by the plasma wakefield. Ultimately, two energetic electron bunches with a narrow energy spread and low emittance are obtained.
Bibliography:quasi phase-stable acceleration, monoenergetic electron bunch, dense-plasmawall
LIU Mingping LIU Sanqiu , HE Jun LIU Jie（ 1 College of Information Engineering, Nanchang University, Nanchang 330031, China 2Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, Beijing Normal University, Beijing 100875, China 3Department of Physics, Nanchang University, Nanchang 330047, China 41nstitute of Applied Physics and Computational Mathematics, Beijing 100088, China）
The wake bubble expansion and contraction by adding a dense-plasma wall in the background plasma during the mode transition from laser wakefield to plasma wakefield accel- eration is investigated by particle-in-cell simulations. The electrons are injected continuously into the cavity until the lateral bubble size equals the inner diameter of the wall. The injected electron bunch from the laser wakefield acceleration （LWFA） scheme is quasi phase-stably accel- erated forward because of the longitudinal contraction of the bubble. After the laser pulse is depleted completely, the electron bunch generated from the LWFA scheme drives a plasma wake- field. The electrons remaining in the channel are trapped and accelerated by the plasma wakefield. Ultimately, two energetic electron bunches with a narrow energy spread and low emittance are obtained.
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ISSN:1009-0630
DOI:10.1088/1009-0630/15/9/01