Eur. Phys. J. D 60, 317-323 (2010)
https://doi.org/10.1140/epjd/e2010-00217-2

Multi-peak structure of the ion current in laser produced plasma

¹ Department of Physics, Technical “Gh. Asachi” University Blvd. Mangeron, Iasi, 700029, Romania
² Laboratory of Advanced Science and Technology for Industry, University of Hyogo, Hyogo, 678-1205, Japan
³ Faculty of Physics, “Al. I. Cuza” University, Iasi, 700050, Romania

Corresponding author: ^a pnica@tuiasi.ro

Received: 28 April 2010
Revised: 25 June 2010
Published online: 30 August 2010

Abstract

The experimental multi-peak structure of the transient ion current recorded by a charge-collector probe during the laser produced plasma expansion is reported for Sn and Li targets, and various focusing conditions and laser beam energies. Using a simple hydrodynamic model, the numerical simulations can reproduce well this type of behavior. Theoretically, a fractal hydrodynamic model is developed in a non-differentiable space-time. The solutions of Gaussian wave packet and `bouncing' Gaussian wave packets types are found to explain the plasma expansion and to give a reasonable mathematical description of plasma splitting process.