<abstract xmlns="http://www.w3.org/1999/xhtml">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 3 × 1016 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.</abstract>

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 3 × 1016 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.

Electromagnetic pulses produced by expanding laser-produced Au plasma

Institute of Physics of the Czech Academy of Sciences, 182 21 Prague 8, Czech Republic, Tel.: +42 07 7762 0248

Faculty of Electrical Engineering, Czech Technical University in Prague, 166 27 Prague, Czech Republic

Institute of Plasma Physics of the Czech Academy of Sciences, 182 00 Prague 8, Czech Republic

Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, 180 00 Prague 8, Czech Republic

Nukleonika

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Electromagnetic pulses produced by expanding laser-produced Au plasma"}

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...

Electromagnetic pulses produced by expanding laser-produced Au plasma

Published Online: Jun 22, 2015

Page range: 239 - 243

Received: Jun 13, 2014

Accepted: Dec 15, 2014

DOI: https://doi.org/10.1515/nuka-2015-0043

Keywords
laser-produced plasma, electromagnetic pulse (EMP), return target current, Moebius loop antenna, inductive target probe

© Massimo De Marco et al.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Electromagnetic pulses produced by expanding laser-produced Au plasma

Published Online: Jun 22, 2015

Page range: 239 - 243

Received: Jun 13, 2014

Accepted: Dec 15, 2014

DOI: https://doi.org/10.1515/nuka-2015-0043

Keywordslaser-produced plasma, electromagnetic pulse (EMP), return target current, Moebius loop antenna, inductive target probe

© Massimo De Marco et al.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
laser-produced plasma, electromagnetic pulse (EMP), return target current, Moebius loop antenna, inductive target probe