Parametric investigation of laser interaction with uniform and nanostructured near-critical plasmas*
Politecnico di Milano, 20133 Milano, Italy
Received: 29 March 2017
Received in final form: 22 May 2017
Published online: 3 August 2017
Laser interaction with uniform and nanostructured near-critical plasmas has been investigated by means of 2D particle-in-cell simulations. The effect of a nanostructure (modeled as a collection of solid-density nanospheres) on energy absorption and radiative losses has been assessed in a wide range of laser intensities (normalized amplitude a0 = 1 − 135) and average densities of the target (electron density ne = 1 − 9nc, where nc is the critical electron density). The nanostructure was found to affect mainly the conversion efficiency of laser energy into ion kinetic energy and radiative losses for the highest simulated intensities.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2017