Near monochromatic 20 MeV proton acceleration using fs laser irradiating Au foils in target normal sheath acceleration regime

0459941 - ÚJF 2017 RIV US eng J - Journal Article
Torrisi, L. - Cutroneo, Mariapompea - Ceccio, G. - Cannavo, A. - Batani, D. - Boutoux, G. - Jakubowska, K. - Ducret, J. E.
Near monochromatic 20 MeV proton acceleration using fs laser irradiating Au foils in target normal sheath acceleration regime.
Physics of Plasmas. Roč. 23, č. 4 (2016), č. článku 043102. ISSN 1070-664X. E-ISSN 1089-7674
R&D Projects: GA ČR(CZ) GBP108/12/G108; GA MŠMT(CZ) LM2011019
Institutional support: RVO:61389005
Keywords : Au foils * time-of-flight * laser
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 2.115, year: 2016

A 200 mJ laser pulse energy, 39 fs-pulse duration, 10 mu m focal spot, p-polarized radiation has been employed to irradiate thin Au foils to produce proton acceleration in the forward direction. Gold foils were employed to produce high density relativistic electrons emission in the forward direction to generate a high electric field driving the ion acceleration. Measurements were performed by changing the focal position in respect of the target surface. Proton acceleration was monitored using fast SiC detectors in time-of-flight configuration. A high proton energy, up to about 20 Me V, with a narrow energy distribution, was obtained in particular conditions depending on the laser parameters, the irradiation conditions, and a target optimization.
Permanent Link: http://hdl.handle.net/11104/0260100