A Proton Source via Laser Ablation of Hydrogenated Targets

Plasma Physics by Laser and Applications 2013 Conference

Delle Side, D.^1 ; Nassisi, V.^1 ; Velardi, L.^1

LEAS, Dipartimento di Matematica e Fisica, INFN Sezione di Lecce, Italy^1

关键词: Accelerating voltages;    Extraction systems;    Ion collectors;    Ion emissions;    Laser irradiance;    Nanosecond pulse;    Proton source;    Time-of-flight techniques;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/508/1/012013/pdf
DOI  :  10.1088/1742-6596/508/1/012013

来源: IOP

【 摘 要 】

In this work we present results on the extraction of proton beams from a plasma generated by pulsed laser ablation of solid hydrogenated targets. The laser used was an excimer KrF operating at low irradiances (108-109W/cm2) and nanosecond pulse duration. The ablated targets were disks obtained by compression of TiH2 powder. The ion emission was analyzed by the time-of-flight technique using a Faraday cup as ion collector. In order to improve the ion yield, an electrostatic extraction system was applied. Studies on the produced plasma for different laser irradiances and accelerating voltages have been performed. The results obtained show that this setup is suitable for a high yield proton source.