High energy proton acceleration in interaction of short laser pulse with dense plasma target

DOI PDF 被引用文献32件
  • Y. Sentoku
    General Atomics, P.O. Box 85608, San Diego, California 92186-5608
  • T. E. Cowan
    General Atomics, P.O. Box 85608, San Diego, California 92186-5608
  • A. Kemp
    General Atomics, P.O. Box 85608, San Diego, California 92186-5608
  • H. Ruhl
    General Atomics, P.O. Box 85608, San Diego, California 92186-5608

抄録

<jats:p>The generation of high energy protons from the interaction of a short laser pulse with a dense plasma, accompanied by a preformed low density plasma, has been studied by particle-in-cell simulations. The proton acceleration toward the laser direction in the preformed plasma is characterized by a time-dependent model and the peak proton energy is given. The effect of electron recirculation on the rear side sheath acceleration is discussed and it is found that the peak proton energy increases in inverse proportion to the target thickness. These results shed light on the peak proton energy dependence on laser intensity, laser pulse length, and target thickness. Finally the optimal parameters of the laser pulse for large ion peak energy and conversion efficiency are discussed.</jats:p>

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