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Title: High-energy-density electron jet generation from an opening gold cone filled with near-critical-density plasma

By using two-dimensional particle-in-cell simulations, we propose a scheme for strong coupling of a petawatt laser with an opening gold cone filled with near-critical-density plasmas. When relevant parameters are properly chosen, most laser energy can be fully deposited inside the cone with only 10% leaving the tip opening. Due to the asymmetric ponderomotive acceleration by the strongly decayed laser pulse, high-energy-density electrons with net laser energy gain are accumulated inside the cone, which then stream out of the tip opening continuously, like a jet. The jet electrons are fully relativistic, with speeds around 0.98−0.998 c and densities at 10{sup 20}/cm{sup 3} level. The jet can keep for a long time over 200 fs, which may have diverse applications in practice.
Authors:
; ; ; ; ; ; ; ;  [1] ; ; ;  [2] ;  [3] ;  [4]
  1. College of Science, National University of Defense Technology, Changsha 410073 (China)
  2. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China)
  3. Department of Physics, University of California, Los Angeles, California 90095 (United States)
  4. (United States)
Publication Date:
OSTI Identifier:
22412803
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COMPUTERIZED SIMULATION; CONES; ELECTRON DENSITY; ELECTRONS; ENERGY DENSITY; GAIN; GOLD; LASER RADIATION; LASERS; PETAWATT POWER RANGE; PLASMA DENSITY; PLASMA JETS; PLASMA SIMULATION; PONDEROMOTIVE FORCE; RELATIVISTIC PLASMA; TWO-DIMENSIONAL CALCULATIONS; VELOCITY