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Title: Evolution of the angular distribution of laser-generated fast electrons due to resistive self-collimation

The evolution of the angular distribution of laser-generated fast electrons propagating in dense plasmas is studied by 3D numerical simulations. As resistively generated magnetic fields can strongly influence and even pinch the fast electron beam, the question of the effect on the angular distribution is of considerable interest. It was conjectured that in the limit of strong collimation, there will only be minimal changes to the angular distribution, whereas the largest reduction in the angular distribution will occur where there is only modest pinching of the fast electron beam and the beam is able to expand considerably. The results of the numerical simulations indicate this conjecture.
Authors:
;  [1]
  1. Central Laser Facility, STFC Rutherford-Appleton Laboratory, Didcot, Oxfordshire OX11 0QX (United Kingdom)
Publication Date:
OSTI Identifier:
22486452
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 10; 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; ANGULAR DISTRIBUTION; COMPUTERIZED SIMULATION; ELECTRON BEAMS; ELECTRONS; LASER RADIATION; MAGNETIC FIELDS; PLASMA