Abstract
A remarkable improvement is presented on the energy conversion efficiency from laser to protons in a laser-foil interaction by particle simulations. The total laser-proton energy conversion efficiency from laser to protons becomes 16.7%, though a conventional plane foil target serves a rather low efficiency. In our 2.5-dimensional particle-in-cell simulations the Al multihole structure is also employed, and the laser absorption ratio reaches 71.2%. The main physical reason for the enhancement of the conversion efficiency is a reduction of the laser reflection at the target surface area
Highlights
A remarkable improvement is presented on the energy conversion efficiency from laser to protons in a laser-foil interaction by particle simulations
Ion beams are useful for basic particle physics, medical therapy, controlled nuclear fusion, high-energy sources, and so on [1,2,3,4,5,6,7,8]
In this paper we focus on the energy conversion efficiency from laser to protons in the laser-ion acceleration, and so far the energy conversion efficiency was still relatively low in actual experiments
Summary
Ion beams are useful for basic particle physics, medical therapy, controlled nuclear fusion, high-energy sources, and so on [1,2,3,4,5,6,7,8]. A remarkable improvement is presented on the energy conversion efficiency from laser to protons in a laser-foil interaction by particle simulations. The energy of ions, which are accelerated in an interaction between an intense laser pulse and a thin foil target, has been over MeV [9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24].
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