Laser Ion Acceleration Scaling Laws Seen in Muti-Parametric PIC Simulations

Abstract

The ion acceleration driven by a laser pulse at intensity $I=10^{20}-10^{22}$W/cm${}^2\times (\mu$m$/\lambda {)}^2$ from a double layer target is investigated with multi-parametric Particle-in-Cell (PIC) simulations. For targets with a wide range of thickness $l$ and density $n_e$, at given intensity the highest ion energy gain occurs at certain {\it critical depth} of the target $\sigma =n_{e}l$, which is proportional to the square root of intensity. In the case of thin targets and optimal laser pulse duration, the ion maximum energy scales as the square root of the laser pulse power. When the radiation pressure of the laser field becomes dominant, the ion maximum energy becomes proportional to the laser pulse energy.

4 pages, 4 figures

References in corpus (3)

• Radiation Pressure Dominate Regime of Relativistic Ion Acceleration
• Zettawatt-Exawatt Lasers and Their Applications in Ultrastrong-Field Physics: High Energy Front
• Neutrino oscillation studies with laser-driven beam dump facilities

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