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Phys Rev Lett. 2005 Apr 29;94(16):165003. Epub 2005 Apr 29.

Laser acceleration of ion bunches at the front surface of overdense plasmas.

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1
Istituto Nazionale per la Fisica della Materia and POLYLAB, Dipartimento di Fisica E. Fermi, Università di Pisa, Largo B. Pontecorvo 3, 56127 Pisa, Italy. macchi@df.unipi.it

Abstract

The acceleration of ions in the interaction of high intensity laser pulses with overdense plasmas is investigated with particle-in-cell simulations. For circular polarization of the laser pulses, high-density ion bunches moving into the plasma are generated at the laser-plasma interaction surface. A simple analytical model accounts for the numerical observations and provides scaling laws for the ion bunch energy and generation time as a function of pulse intensity and plasma density.

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