Multi-Stages Proton Acceleration Booster in Laser Plasma Interaction

TL;DR

This paper demonstrates a multi-stage proton acceleration method in laser plasma interactions, achieving a maximum proton energy of 254 MeV through successive inductive acceleration stages, enhancing ion energy control and output.

Contribution

The study introduces a novel multi-stage acceleration scheme using inductive electric fields in laser plasma, significantly increasing proton energy beyond previous single-stage methods.

Findings

Maximum proton energy reached 254 MeV.

Four-stage acceleration significantly boosts ion energy.

Simulation results confirm controllability of ion acceleration.

Abstract

A remarkable ion energy increase is demonstrated by several-stage post-acceleration in a laser plasma interaction. Intense short-pulse laser generates a strong current by high-energy electrons accelerated, when an 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 of the magnetic field, the longitudinal inductive electric field is induced for the forward ion acceleration by the Faraday law. The inductive acceleration and the target-normal sheath acceleration in the multi stages provide a unique controllability of the ion energy. By the four-stage successive acceleration, our 2.5-dimensional particle-in-cell simulations demonstrate a remarkable increase in ion energy by a few hundreds of MeV; the maximum proton energy reaches 254MeV.