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Title: Enhanced target normal sheath acceleration of protons from intense laser interaction with a cone-tube target

Laser driven proton acceleration is proposed to be greatly enhanced by using a cone-tube target, which can be easily manufactured by current 3D-print technology. It is observed that energetic electron bunches are generated along the tube and accelerated to a much higher temperature by the combination of ponderomotive force and longitudinal electric field which is induced by the optical confinement of the laser field. As a result, a localized and enhanced sheath field is produced at the rear of the target and the maximum proton energy is about three-fold increased based on the two-dimentional particle-in-cell simulation results. It is demonstrated that by employing this advanced target scheme, the scaling of the proton energy versus the laser intensity is much beyond the normal target normal sheath acceleration (TNSA) case.
Authors:
;  [1] ;  [1] ;  [2] ;  [2] ;  [1] ;  [2] ;  [2] ;  [3] ;  [4] ;  [1] ;  [2]
  1. Center for Applied Physics and Technology, HEDPS, and School of Physics, Peking University, Beijing 100871 (China)
  2. (China)
  3. Institute of Applied Physics and Computational Mathematics, Beijing 100094 (China)
  4. College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060 (China)
Publication Date:
OSTI Identifier:
22492414
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 6; Journal Issue: 1; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCELERATION; BEAM BUNCHING; CONES; ELECTRIC CURRENTS; ELECTRIC FIELDS; LASER RADIATION; LASER TARGETS; LASER-PRODUCED PLASMA; LASERS; PARTICLES; PONDEROMOTIVE FORCE; PROTONS; TAIL ELECTRONS