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Title: Transport of fast electrons in a nanowire array with collisional effects included

The transport of picosecond laser generated fast electrons in a nanowire array is studied with two-dimensional particle-in-cell simulations. Our simulations show that a fast electron beam is initially guided and collimated by strong magnetic filaments in the array. Subsequently, after the decomposition of the structure of nanowire array due to plasma expansion, the beam is still collimated by the resistive magnetic field. An analytical model is established to give a criterion for long-term beam collimation in a nanowire array; it indicates that the nanowire cell should be wide enough to keep the beam collimated in picosecond scale.
Authors:
; ; ; ; ; ; ;  [1] ;  [2] ;  [1] ;  [3]
  1. Science and Technology on Plasma Physics Laboratory, Laser Fusion Research Center, China Academy of Engineering Physics, 621900 Mianyang (China)
  2. Center for Applied physics and Technology, HEDPs, Peking University, Beijing 100871 (China)
  3. (China)
Publication Date:
OSTI Identifier:
22489960
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 12; Other Information: (c) 2015 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; ANALYTIC FUNCTIONS; COMPUTERIZED SIMULATION; ELECTRON BEAMS; ELECTRON TRANSFER; ELECTRONS; FILAMENTS; LASER RADIATION; MAGNETIC FIELDS; PLASMA EXPANSION; TWO-DIMENSIONAL CALCULATIONS