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Title: Collimated proton acceleration in light sail regime with a tailored pinhole target

A scheme for producing collimated protons from laser interactions with a diamond-like-carbon + pinhole target is proposed. The process is based on radiation pressure acceleration in the multi-species light-sail regime [B. Qiao et al., Phys. Rev. Lett. 105, 155002 (2010); T. P. Yu et al., Phys. Rev. Lett. 105, 065002 (2010)]. Particle-in-cell simulations demonstrate that transverse quasistatic electric field at TV/m level can be generated in the pinhole. The transverse electric field suppresses the transverse expansion of protons effectively, resulting in a higher density and more collimated proton beam compared with a single foil target. The dependence of the proton beam divergence on the parameters of the pinhole is also investigated.
Authors:
;  [1] ;  [2]
  1. Helmholtz Institute Jena, Fröbelstieg 3, 07743 Jena (Germany)
  2. State Key Laboratory of Nuclear Physics and Technology and Key Lab of High Energy Density Physics Simulation, CAPT, Peking University, Beijing 100871 (China)
Publication Date:
OSTI Identifier:
22299983
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 6; 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; COMPARATIVE EVALUATIONS; DIAMONDS; ELECTRIC FIELDS; FOILS; LASERS; PROTONS; RADIATION PRESSURE; SIMULATION