Effect of laser light polarization on generation of relativistic ion beams driven by an ultraintense laser

摘要

The effect of laser light polarization on properties of proton and carbon ion beams generated from a CH target irradiated by a 130 fs laser pulse of ultra-relativistic intensity (～10~(22)-10~(23)W/cm~2) is investigated using particle-in-cell simulations. It is shown that only circular light polarization ensures the production of quasi-monoenergetic relativistic beams of both protons and carbon ions from such a target while using the linear one results in the generation of quasi-monoenergetic protons accompanied with carbon ions of complex and broad energy spectrum. The influence of the target thickness and laser intensity on the ion energy spectrum and the laser-ions energy conversion efficiency is examined.