title: Fast proton generation from ultrashort laser pulse interaction with double-layer foil targets.
abstract: The results of studies of fast-proton generation from foil targets irradiated by 1-ps laser pulse at 10(17) W/cm (2) are presented. It is shown that a considerable increase in proton energy and current is possible when a double-layer foil target containing a high- Z layer and a low- Z hydrogen-rich layer is used instead of a single-layer target. Proton energies and current increase with the Z of the high- Z layer and depend essentially on the target and the layer thicknesses. Above 10(9) forward-emitted protons of energy >100 keV have been recorded within a cone angle <3 degrees.
authors.affiliation: Institute of Plasma Physics and Laser Microfusion, P.O. Box 49, 00-908 Warsaw, Poland. badziak@ifpilm.waw.pl
authors.forename: J
authors.initials: J
authors.lastname: Badziak
authors.forename: E
authors.initials: E
authors.lastname: Woryna
authors.forename: P
authors.initials: P
authors.lastname: Parys
authors.forename: K Y
authors.initials: KY
authors.lastname: Platonov
authors.forename: S
authors.initials: S
authors.lastname: Jabloński
authors.forename: L
authors.initials: L
authors.lastname: Ryć
authors.forename: A B
authors.initials: AB
authors.lastname: Vankov
authors.forename: J
authors.initials: J
authors.lastname: Wolowski