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Narrow-directed fast-ion flow generation from targets irradiated by a picosecond laser pulse |
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| Authors: | A A Andreev V P Andrianov V G Borodin V M Komarov V A Malinov N V Nikitin A V Serdyukov A V Charukhchev V N Chernov K Yu Platonov A V Bessarab S G Garanin A A Gorbunov N A Suslov |
| Institution: | (1) All-Russia Scientific Center, Vavilov State Optical Institute, Birzhevaya liniya 12, St. Petersburg, 199034, Russia;(2) Research Institute of Pulse Technology, Moscow, 115304, Russia;(3) Research Institute for Complex Testing of Optoelectronic Devices, Sosnovyi Bor, Leningrad region, 188540, Russia;(4) St. Petersburg State Technical University, ul. Politekhnicheskaya 29, St. Petersburg, 195434, Russia;(5) Russian Federal Nuclear Center, Institute of Experimental Physics, Arzamas-16, Nizhni Novgorod region, 607190, Russia |
| Abstract: | The proton and deuteron yields from thin targets irradiated by a picosecond laser pulse with an average radiation intensity of ≤4×1018 W/cm2 at the target were measured in the megaelectron-volt energy range. A ring structure was observed for the outgoing ions, and the angular ion-beam divergence was found to be extremely small (0.5°). The fast-ion generation mechanism allowing for the appearance of ring structure is discussed, and the characteristic energies and spatioangular ion-beam distribution are estimated. |
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