Magnetic field generation using single-plate targets driven by kJ-ns class laser

Strong magnetic fields of upto 20 T, corresponding to a current of tens of kA were produced in a coil connected to a single-plate of cm2 area irradiated by a kJ-ns laser pulse. The use of such macroscopic plates protects the coil from plasma debris, while maintaining a strong magnetic field for a ti...

Full description

Saved in:
Bibliographic Details
Published in:Plasma physics and controlled fusion 2020-12, Vol.62 (12), p.125024
Main Authors: Kumar, Deepak, Singh, Sushil, Ahmed, Hamad, Dud ák, Roman, Dostál, Jan, Chodukowski, Tomasz, Giuffrida, Lorenzo, Hadjisolomu, Prokopis, Hodge, Thomas, Juha, Libor, Krouský, Eduard, Kr s, Miroslav, Li, Yuanzhe, Lutoslawski, Piotr, De Marco, Massimo, Pfeifer, Miroslav, Rusiniak, Zofia, Skála, Ji í, Ullschmeid, Ji í, Pisarczyk, Tadeusz, Borghesi, Marco, Kar, Satyabrata
Format: Article
Language:English
Subjects:
capacitor coil
laser matter interaction
magnetic field
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Strong magnetic fields of upto 20 T, corresponding to a current of tens of kA were produced in a coil connected to a single-plate of cm2 area irradiated by a kJ-ns laser pulse. The use of such macroscopic plates protects the coil from plasma debris, while maintaining a strong magnetic field for a time-scale much longer than the laser pulse duration. By correlating the measured magnetic field in the coil to the number of electrons emitted from the interaction zone, we deduce that the target capacitance is enhanced by two orders of magnitude because of the plasma sheath in the proximity of the focal spot. The particle-in-cell simulation illustrates the dynamics of sheath potential and current flow through the coil to ground, thus closing the circuit due to the escape of laser-produced hot electrons from the target.
ISSN:0741-3335
1361-6587
DOI:10.1088/1361-6587/abb617