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Title: Enhancement of proton acceleration field in laser double-layer target interaction

A mechanism is proposed to enhance a proton acceleration field in laser plasma interaction. A double-layer plasma with different densities is illuminated by an intense short pulse. Electrons are accelerated to a high energy in the first layer by the wakefield. The electrons accelerated by the laser wakefield induce the enhanced target normal sheath (TNSA) and breakout afterburner (BOA) accelerations through the second layer. The maximum proton energy reaches about 1 GeV, and the total charge with an energy higher than 100 MeV is about several tens of μC/μm. Both the acceleration gradient and laser energy transfer efficiency are higher than those in single-target-based TNSA or BOA. The model has been verified by 2.5D-PIC simulations.
Authors:
 [1] ;  [2] ; ; ; ;  [1] ; ;  [3] ;  [4]
  1. Applied Ion Beam Physics Laboratory, Key Laboratory of the Ministry of Education, Institute of Modern Physics, Fudan University, Shanghai 200433 (China)
  2. (Japan)
  3. Department of Advanced Interdisciplinary Sciences, Utsunomiya University, Yohtoh 7-1-2, Utsunomiya 321-8585 (Japan)
  4. College of Science, National University of Defense Technology, Changsha 410073 (China)
Publication Date:
OSTI Identifier:
22227919
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 7; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATION; BEAM-PLASMA SYSTEMS; ELECTRONS; ENERGY TRANSFER; GEV RANGE; LASER TARGETS; LAYERS; MEV RANGE; PLASMA DENSITY; PLASMA GUNS; PLASMA SHEATH; PLASMA SIMULATION; PROTONS; WAKEFIELD ACCELERATORS