Efficient neutron production from sub-nanosecond laser pulse accelerating deuterons on target front side

0455689 - ÚFP 2016 RIV US eng J - Článek v odborném periodiku
Klír, Daniel - Krása, Josef - Cikhardt, Jakub - Dudžák, Roman - Krouský, Eduard - Pfeifer, Miroslav - Řezáč, Karel - Sila, O. - Skála, Jiří - Ullschmied, Jiří - Velyhan, Andriy
Efficient neutron production from sub-nanosecond laser pulse accelerating deuterons on target front side.
Physics of Plasmas. Roč. 22, č. 9 (2015), s. 093117-093117. ISSN 1070-664X. E-ISSN 1089-7674
Grant CEP: GA ČR GAP205/12/0454; GA MŠMT(CZ) LG13029; GA MŠMT LM2010014; GA MŠMT EE2.3.20.0279
Grant ostatní: LaserZdroj (OP VK 3)(XE) CZ.1.07/2.3.00/20.0279
Institucionální podpora: RVO:61389021 ; RVO:68378271
Klíčová slova: plasma * femtosecond laser * nuclear-fusion * ion-beams * hot-electrons
Obor OECD: Fluids and plasma physics (including surface physics); Fluids and plasma physics (including surface physics) (FZU-D)
Impakt faktor: 2.207, rok: 2015
http://scitation.aip.org/content/aip/journal/pop/22/9/10.1063/1.4931460

Neutron-producing experiments have been carried out on the Prague Asterix Laser System. At the fundamental wavelength of 1.315 mu m, the laser pulse of a 600 J energy and 300 ps duration was focused on a thick deuterated-polyethylene target. Neutron yields reached (4.1 +/- 0.8) x 10(8) at the peak intensity of approximate to 3 x 10(16)W/cm(2). A more detailed analysis of neutron time-of-flight signals showed that a significant fraction of neutron yields was produced both by the H-2(d,n)He-3 reaction and by other neutron-producing reactions. Neutron energies together with delayed neutron and gamma emission showed that MeV deuterons escaped from a laser-produced plasma and interacted approximate to 50 ns later with a borosilicate blast-shield glass. In order to increase DD neutron yields and to characterize deuteron beams via nuclear reactions, a secondary deuterated polyethylene target was used in a pitcher-catcher scheme at the target front side. In this experimental arrangement
Trvalý link: http://hdl.handle.net/11104/0256308