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Title: On the origin of super-hot electrons from intense laser interactions with solid targets having moderate scale length preformed plasmas

We use particle-in-cell modeling to identify the acceleration mechanism responsible for the observed generation of super-hot electrons in ultra-intense laser-plasma interactions with solid targets with pre-formed plasma. We identify several features of direct laser acceleration that drive the generation of super-hot electrons. We find that, in this regime, electrons that become super-hot are primarily injected by a looping mechanism that we call loop-injected direct acceleration.
Authors:
; ;  [1]
  1. Physics Department, The Ohio State University, Columbus, Ohio 43210 (United States)
Publication Date:
OSTI Identifier:
22252047
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 2; Other Information: (c) 2014 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; ELECTRONS; INTERACTIONS; LASER TARGETS; LASERS; LENGTH; ORIGIN; PLASMA; SOLIDS