Electromagnetic pulses produced by expanding laser-produced Au plasma

0455723 - FZÚ 2016 RIV PL eng J - Journal Article
De Marco, Massimo - Cikhardt, J. - Krása, Josef - Velyhan, Andriy - Pfeifer, Miroslav - Krouský, Eduard - Klír, D. - Řezáč, K. - Limpouch, J. - Margarone, Daniele - Ullschmied, Jiří
Electromagnetic pulses produced by expanding laser-produced Au plasma.
Nukleonika. Roč. 60, č. 2 (2015), s. 239-243. ISSN 0029-5922. E-ISSN 1508-5791
R&D Projects: GA MŠMT EE2.3.20.0279; GA ČR GAP205/12/0454; GA MŠMT(CZ) LD14089; GA MŠMT LM2010014
Grant - others:LaserZdroj (OP VK 3)(XE) CZ.1.07/2.3.00/20.0279
Institutional support: RVO:68378271 ; RVO:61389021
Keywords : laser-produced plasma * electromagnetic pulse (EMP) * return target current * Moebius loop antenna * inductive target probe
Subject RIV: BL - Plasma and Gas Discharge Physics; BH - Optics, Masers, Lasers (UFP-V)
Impact factor: 0.546, year: 2015

The interaction of an intense laser pulse with a solid target produces large number of fast free electrons. This emission gives rise to two distinct sources of the electromagnetic pulse (EMP): the pulsed return current through the holder of the target and the outflow of electrons into the vacuum. A relation between the characteristics of laser-produced plasma, the target return current and the EMP emission are presented in the case of a massive Au target irradiated with the intensity of up to 3e16 W/cm2. The emission of the EMP was recorded using a 12 cm diameter Moebius loop antennas, and the target return current was measured using a new type of inductive target probe (T-probe). The simultaneous use of the inductive target probe and the Moebius loop antenna represents a new useful way of diagnosing the laser–matter interaction, which was employed to distinguish between laser-generated ion sources driven by low and high contrast laser pulses.
Permanent Link: http://hdl.handle.net/11104/0256346