Proton emission from thin hydrogenated targets irradiated by laser pulses at 10.sup.16./sup. W/cm.sup.2./sup

0377275 - FZÚ 2013 RIV US eng J - Journal Article
Torrisi, L. - Giuffrida, L. - Cutroneo, M. - Cirrone, P. - Picciotto, A. - Krása, Josef - Margarone, Daniele - Velyhan, Andriy - Láska, Leoš - Ullschmied, Jiří - Wolowski, J. - Badziak, J. - Rosinski, M.
Proton emission from thin hydrogenated targets irradiated by laser pulses at 10¹⁶ W/cm²
Review of Scientific Instruments. Roč. 83, č. 2 (2012), "02B315-1"-"02B315-4". ISSN 0034-6748. E-ISSN 1089-7623
R&D Projects: GA MŠMT(CZ) 7E09092; GA MŠMT(CZ) LC528
Institutional research plan: CEZ:AV0Z10100523; CEZ:AV0Z20430508
Keywords : harmonics * hydrogenation * iodine * ion emission * laser beam effects * plasma materials processing * proton production * semiconductor counters
Subject RIV: BH - Optics, Masers, Lasers
Impact factor: 1.602, year: 2012

The iodine laser at PALS Laboratory in Prague, operating at 1315 nm fundamental harmonics and at 300 ps FWHM pulse length, is employed to irradiate thin hydrogenated targets placed in vacuum at intensities on the order of 1016 W/cm2. The laser-generated plasma is investigated in terms of proton and ion emission in the forward and backward directions. The time-of-flight technique, using ion collectors and semiconductor detectors, is used to measure the ion currents and the corresponding velocities and energies. Thomson parabola spectrometer is employed to separate the contribution of the ion emission from single laser shots. A particular attention is given to the proton production in terms of the maximum energy, emission yield, and angular distribution as a function of the laser energy, focal position, target thickness, and composition.
Permanent Link: http://hdl.handle.net/11104/0209477