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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 16 — Aug. 15, 2007
  • pp: 2444–2446

Intense laser-driven energetic proton beams from solid density targets

C. T. Zhou and X. T. He  »View Author Affiliations

Optics Letters, Vol. 32, Issue 16, pp. 2444-2446 (2007)

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The effects of target density on proton acceleration driven by an intense sub-ps laser pulse are investigated using two-dimensional hybrid particle-in-cell simulations. Results show that at higher density the target-normal-sheath acceleration (TNSA) is more effective than shock acceleration for protons from a plastic target. Furthermore a lower-density target is favorable to higher energy of the TNSA protons. Moreover, the longitudinal electric fields at the target surfaces may reveal typical inhomogeneous structures for a long acceleration time. The conversion efficiency of laser energy into particle (electron, proton, and C + ion) energy is found to increase with decreasing target density.

© 2007 Optical Society of America

OCIS Codes
(320.2250) Ultrafast optics : Femtosecond phenomena
(350.4990) Other areas of optics : Particles
(350.5400) Other areas of optics : Plasmas

ToC Category:
Ultrafast Optics

Original Manuscript: April 26, 2007
Revised Manuscript: June 25, 2007
Manuscript Accepted: July 9, 2007
Published: August 9, 2007

C. T. Zhou and X. T. He, "Intense laser-driven energetic proton beams from solid density targets," Opt. Lett. 32, 2444-2446 (2007)

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