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

0537181 - ÚFP 2021 RIV GB eng J - Journal Article
Kumar, D. - Singh, S. - Ahmed, H. - Dudžák, Roman - Dostál, Jan - Chodukowski, T. - Giuffrida, L. - Hadjisolomu, P. - Hodge, T. - Juha, Libor - Krouský, Eduard - Krůs, Miroslav - Li, Y. - Lutoslawski, P. - De Marco, M. - Pfeifer, Miroslav - Rusiniak, Z. - Skála, J. - Ullschmeid, Jiří - Pisarczyk, T. - Borghesi, M. - Kar, S.
Magnetic field generation using single-plate targets driven by kJ-ns class laser.
Plasma Physics and Controlled Fusion. Roč. 62, č. 12 (2020), s. 1-2, č. článku 125024. ISSN 0741-3335. E-ISSN 1361-6587
R&D Projects: GA MŠMT LTT17015; GA MŠMT(CZ) LM2015083; GA MŠMT EF16_013/0001552
EU Projects: European Commission(XE) 654148 - LASERLAB-EUROPE
Institutional support: RVO:61389021
Keywords : Capacitor coil * Laser matter interaction * Magnetic field
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 2.458, year: 2020
Method of publishing: Limited access
https://iopscience.iop.org/article/10.1088/1361-6587/abb617

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.
Permanent Link: http://hdl.handle.net/11104/0314926