Fast proton generation from ultrashort laser pulse interaction with double-layer foil targets.
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.
Badziak
J
J
Institute of Plasma Physics and Laser Microfusion, P.O. Box 49, 00-908 Warsaw, Poland. badziak@ifpilm.waw.pl
Woryna
E
E
Parys
P
P
Platonov
K Y
KY
Jabloński
S
S
Ryć
L
L
Vankov
A B
AB
Wolowski
J
J