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

LIU Mingping (刘明萍); LIU Sanqiu (刘三秋); HE Jun (何俊); LIU Jie (刘杰)

doi:10.1088/1009-0630/15/9/01

Plasma Science and Technology > 2013 > 15(9): 841-844. > DOI: 10.1088/1009-0630/15/9/01

LIU Mingping (刘明萍), LIU Sanqiu (刘三秋), HE Jun (何俊), LIU Jie (刘杰). Electron Acceleration During the Mode Transition from Laser Wakefield to Plasma Wakefield Acceleration with a Dense-Plasma Wall[J]. Plasma Science and Technology, 2013, 15(9): 841-844. DOI: 10.1088/1009-0630/15/9/01

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

1 College of Information Engineering, Nanchang University, Nanchang 330031, China 2 Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, Beijing Normal University, Beijing 100875, China 3 Department of Physics, Nanchang University, Nanchang 330047, China 4 Institute of Applied Physics and Computational Mathematics, Beijing 100088, China

Funds: supported by National Natural Science Foundation of China (Nos.11047152, 11147005 and 11178002), the Natural Science Foundation of Jiangxi Province of China (Nos.2010GQW0048, 20122BAB202003)

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Received Date: July 17, 2012

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Abstract

Abstract

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.
- quasi phase-stable acceleration,
- monoenergetic electron bunch,
- dense-plasma wall

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