Measurement of the target current by inductive probe during laser interaction on terawatt laser system PALS

0436279 - ÚFP 2015 RIV US eng J - Journal Article
Cikhardt, Jakub - Krása, Josef - De Marco, Massimo - Pfeifer, Miroslav - Velyhan, Andriy - Krouský, Eduard - Cikhardtová, B. - Klír, Daniel - Řezáč, Karel - Ullschmied, Jiří - Skála, Jiří - Kubeš, P. - Kravárik, J.
Measurement of the target current by inductive probe during laser interaction on terawatt laser system PALS.
Review of Scientific Instruments. Roč. 85, č. 10 (2014), s. 103507-103507. ISSN 0034-6748. E-ISSN 1089-7623
R&D Projects: GA MŠMT LM2010014; GA MŠMT(CZ) LG13029; GA ČR GAP205/12/0454; GA MŠMT EE2.3.20.0279
Grant - others:LaserZdroj (OP VK 3)(XE) CZ.1.07/2.3.00/20.0279
Institutional support: RVO:61389021 ; RVO:68378271
Keywords : laser PALS * laser-target interaction * target current * inductive probe
Subject RIV: BL - Plasma and Gas Discharge Physics; BL - Plasma and Gas Discharge Physics (FZU-D)
Impact factor: 1.614, year: 2014
http://dx.doi.org/10.1063/1.4898016

Measurements of the return-current flowing through a solid target irradiated with the sub-nanosecond kJ-class Prague Asterix Laser System is reported. A new inductive target probe was developed which allows us measuring the target current derivative in a kA/ns range. The dependences of the target current on the laser pulse energy for cooper, graphite, and polyethylene targets are reported. The experiment shows that the target current is proportional to the deposited laser energy and is strongly affected by the shot-to-shot fluctuations. The corresponding maximum target charge exceeded a value of 10 μC. A return-current dependence of the electromagnetic pulse produced by the laser-target interaction is presented.
Permanent Link: http://hdl.handle.net/11104/0240034