Laser-target experiments at PALS for deuterium plasma beam fusion

0540094 - ÚFP 2021 RIV PL eng J - Článek v odborném periodiku
Krása, J. - Klír, D. - Cikhardt, Jakub - Pfeifer, Miroslav - Hora, H. - Krupka, Michal - Řezáč, K. - Dudžák, Roman - Dostál, Jan - Burian, Tomáš - Krůs, Miroslav - Skála, J. - Jungwirth, K. - Rusiniak, Z. - Pisarczyk, T. - Chodukowski, T.
Laser-target experiments at PALS for deuterium plasma beam fusion.
Acta Physica Polonica A. Roč. 138, č. 4 (2020), s. 579-585. ISSN 0587-4246. E-ISSN 1898-794X
Grant CEP: GA MŠMT(CZ) LM2015083; GA MŠMT EF16_013/0001552
GRANT EU: European Commission(XE) 654148 - LASERLAB-EUROPE
Institucionální podpora: RVO:61389021
Klíčová slova: Laser-plasma acceleration of electrons and ions * Neutrons * Self-focussing in plasmas
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 0.577, rok: 2020
Způsob publikování: Open access
http://przyrbwn.icm.edu.pl/APP/PDF/138/app138z4p01.pdf

The Prague Asterix Laser System (PALS) is a terawatt iodine laser (1.2 kJ, 350 ps, 1315 nm), designed to deliver irradiance on target of about 3-1016 W/cm2. The PALS laser together with a Ti:sapphire laser (1 J, 50 fs, 800 nm) is used for experiments allowing femtosecond probing of laser-produced plasma. We present an experimental study of emission of hot electrons, fast ions and fusion neutrons generated through the 2H(d,n)3He fusion reaction of deuterons. During the laser-plasma interaction and plasma expansion, a multi-population of electrons appears. Non-isotropic emission of fast as well as thermal electrons is typical for the interaction of nanosecond laser radiation with plasma. The production of relativistic electrons makes it possible to accelerate protons to MeV energy and generate fusion neutrons via fusion reactions. The DD-neutron yield is compared to yields obtained from other experiments. Depending on the energy of the laser pulse, it is shown that the competition of laser contrast and laser pulse intensity sets a fundamental constraint on the ion emission and the resultant neutron yield performance of deuterated targets.
Trvalý link: http://hdl.handle.net/11104/0317754