| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Proton Acceleration with Nano-Scale Micro-Structured Target by Circularly Polarized Laser Pulse |
JIN Zhang-Ying, SHEN Bai-Fei, ZHANG Xiao-Mei, WANG Feng-Chao, WEN
Meng, JI Liang-Liang, XU Jian-Cai, WANG Wen-Peng |
| State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 |
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| Cite this article: |
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JIN Zhang-Ying, SHEN Bai-Fei, ZHANG Xiao-Mei et al 2009 Chin. Phys. Lett. 26 125404 |
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Abstract Two dimensional particle-in-cell simulations are taken to study the interaction of a circularly polarized laser pulse with a nano-scale micro-structured target. The protons which are doped in the rear side of the target experience the electrostatic fields caused by both the radiation pressure driven shock and the target normal sheath at the rear side of the target. A quasimonoenergetic proton bunch with central energy of about 11MeV and energy spread of ∆ ε/ε about 0.18 is achieved by using a 3.45×1019 W/cm2, 66fs laser pulse. A comparison with the case of linearly polarized laser pulse and the same target condition is considered.
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| Keywords:
52.38.Kd
52.50.Jm
52.65.Rr
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Received: 08 July 2009
Published: 27 November 2009
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| PACS: |
52.38.Kd
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(Laser-plasma acceleration of electrons and ions)
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52.50.Jm
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(Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.))
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52.65.Rr
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(Particle-in-cell method)
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