Production and Extraction of Protons by Solid Hydrogenated Targets via UV Laser Ablation

Abstract

In this work we present the preliminary investigations about the production of proton beams by pulsed laser ablation of solid disks produced by compressed Titanium dihydride powder. The laser we used was an excimer KrF, operating at low intensity and ns pulse duration. The ion emission was analyzed by the time-of-flight technique using a Faraday cup as ion collector. We performed studies on the produced plasma for different laser fluence values and accelerating voltage. In free expansion mode we obtained protons and titanium ions having kinetic energy of some hundred of eV; by applying a postaccelerating voltage we obtained beams up to 15 keV.