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Title: Generation of energetic protons in the interaction of Gaussian laser pulses with surface modulated targets

The radiation pressure acceleration of protons in the interaction of Gaussian laser pulses and surface modulated targets is examined by multi-dimensional particle-in-cell simulations. It is shown that strong longitudinal quasi-static magnetic field is generated on the modulated surface of the target, which significantly enhances the transverse diffusion of electrons. This is beneficial for suppressing the transverse Rayleigh-Taylor instability. Finally, the surface of the accelerated proton beams becomes smoother than that in the case of the planar target, and a final mono-energetic proton beam is obtained by using the surface modulated target.
Authors:
; ; ; ; ; ;  [1] ;  [2]
  1. College of Science, National University of Defense Technology, Changsha 410003 (China)
  2. College of Computer Science, National University of Defense Technology, Changsha 410003 (China)
Publication Date:
OSTI Identifier:
22407935
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 12; 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; COMPUTERIZED SIMULATION; DIFFUSION; ELECTRONS; LASER TARGETS; LASERS; MAGNETIC FIELDS; PROTON BEAMS; PULSES; RADIATION PRESSURE; RAYLEIGH-TAYLOR INSTABILITY