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Title: Directed fast electron beams in ultraintense picosecond laser irradiated solid targets

We report on fast electron transport and emission patterns from solid targets irradiated by s-polarized, relativistically intense, picosecond laser pulses. A beam of multi-MeV electrons is found to be transported along the target surface in the laser polarization direction. The spatial-intensity and energy distributions of this beam are compared with the beam produced along the laser propagation axis. It is shown that even for peak laser intensities an order of magnitude higher than the relativistic threshold, laser polarization still plays an important role in electron energy transport. Results from 3D particle-in-cell simulations confirm the findings. The characterization of directional beam emission is important for applications requiring efficient energy transfer, including secondary photon and ion source development.
Authors:
 [1] ;  [2] ;  [2] ;  [3] ; ;  [1] ;  [2] ;  [4] ; ;  [5] ;  [4] ; ; ;  [5] ;  [6] ; ;  [1] ;  [2] ;  [7] ;  [2] more »;  [8] ; « less
  1. Key Laboratory for Laser Plasmas (MoE) and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China)
  2. (China)
  3. Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)
  4. (United Kingdom)
  5. SUPA Department of Physics, University of Strathclyde, Glasgow G4 0NG (United Kingdom)
  6. College of Science, National University of Defense Technology, Changsha 410073 (China)
  7. IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240 (China)
  8. PHELIX Group, Gesellschaft für Schwerionenforschung mbH, Planckstrasse 1, D-64291 Darmstadt (Germany)
Publication Date:
OSTI Identifier:
22489187
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 9; 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; ELECTRON BEAMS; EMISSION; ENERGY SPECTRA; ENERGY TRANSFER; IRRADIATION; LASERS; MEV RANGE; NATURAL GAS DISTRIBUTION SYSTEMS; PHOTONS; POLARIZATION; RELATIVISTIC RANGE; SOLIDS