Abstract
A remarkable ion energy increase is demonstrated for post acceleration by a laser-plasma booster. An intense short-pulse laser generates a strong current by high-energy electrons accelerated, when this intense short-pulse laser illuminates a plasma target. The strong electric current creates a strong magnetic field along the high-energy electron current in plasma. During the increase phase in the magnetic field, a longitudinal inductive electric field is induced for the forward ion acceleration by the Faraday law. Our 2.5- dimensional particle-in-cell simulations demonstrate a remarkable increase in ion energy by several tens of MeV.
Highlights
By chirped pulse amplification, high laser intensities have been realized, and high intensity short pulse lasers are available for experiments and applications
A remarkable ion energy increase is demonstrated for post acceleration by a laser-plasma booster
During the increase phase in the magnetic field, a longitudinal inductive electric field is induced for the forward ion acceleration by the Faraday law
Summary
High laser intensities have been realized, and high intensity short pulse lasers are available for experiments and applications. The energy of ions, which are accelerated in an interaction between an intense laser pulse and a near-critical density target, are over a few tens of MeV [1,2,3,4,5,6]. In this paper we focus on a boost of ion beam energy by post-acceleration in laser plasma interaction. We perform 2.5-dimensional particle-in-cell simulations to investigate the ion beam post-acceleration.
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