Macchi Andrea, Cattani Federica, Liseykina Tatiana V, Cornolti Fulvio
Istituto Nazionale per la Fisica della Materia and POLYLAB, Dipartimento di Fisica E. Fermi, Università di Pisa, Largo B. Pontecorvo 3, 56127 Pisa, Italy.
Phys Rev Lett. 2005 Apr 29;94(16):165003. doi: 10.1103/PhysRevLett.94.165003.
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.
利用粒子模拟研究了高强度激光脉冲与过密等离子体相互作用中离子的加速过程。对于激光脉冲的圆偏振，在激光 - 等离子体相互作用表面会产生高密度离子束向等离子体中移动。一个简单的解析模型解释了数值观测结果，并给出了离子束能量和产生时间作为脉冲强度和等离子体密度函数的标度律。
