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Correlation between laser accelerated MeV proton and electron beams using simple fluid model for target normal sheath acceleration

Source: Phys. Plasmas 17, 073110 (2010); doi:10.1063/1.3459063

Published 29 July 2010

KEYWORDS and PACS
Keywords
PACS
  • 52.38.-r
    Laser-plasma interactions
  • 52.38.Ph
    X-ray, γ-ray and particle generation by lasers in plasmas
  • YEAR: 2010
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PUBLICATION DATA
ISSN:
1553-9601 (online)
Publisher:
AIP is a member of CrossRef AIP
M. Tampo,1,2 S. Awano,3 P. R. Bolton,1 K. Kondo,1 K. Mima,2 Y. Mori,4 H. Nakamura,3 M. Nakatsutsumi,3 R. B. Stephens,5 K. A. Tanaka,2,3 T. Tanimoto,3 T. Yabuuchi,3 and R. Kodama2,3
1Photo-Medical Research Center and Advanced Photon Research Center, JAEA, Kyoto 619-0215, Japan
2Institute of Laser Engineering, Osaka University, Yamada-oka 2-6, Suita, Osaka 565-0871, Japan
3Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka 565-0871, Japan
4The Graduate School for The Creation of New Photonics Industries, Kurematsu-cho 1955-1, Hamamatsu City, Shizuoka, Japan
5General Atomics, 3550 General Atomics Court, San Diego, California 92121-1122, USA
High density energetic electrons that are created by intense laser plasma interactions drive MeV proton acceleration. The correlation between accelerated MeV protons and escaped electrons is experimentally investigated at laser intensities in the range of 1018–1019  W/cm2 with S-polarization. Observed proton maximum energies are linearly proportional to escaped electron slope temperatures with a scaling coefficient of about 10. In the context of the simple analytical fluid model for transverse normal sheath acceleration, hot electron sheath density near the target rear surface can be estimated if an empirical acceleration time is assumed. ©2010 American Institute of Physics
History: Received 11 December 2009; accepted 11 June 2010; published 29 July 2010
Permalink: http://link.aip.org/link/?PHPAEN/17/073110/1

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