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

0535115 - FZÚ 2021 RIV GB eng J - Journal Article
Batheja, Deepak Kumar - Singh, Sushil K. - Ahmed, H. - Dudžák, Roman - Dostál, Jan - Chodukowski, T. - Giuffrida, Lorenzo - Hadjisolomu, P. - Hodge, T. - Juha, Libor - Krouský, Eduard - Krůs, M. - Li, Y. - Lutoslawski, Piotr - De Marco, Massimo - Pfeifer, Miroslav - Rusiniak, Z. - Skála, Jiří - Ullschmeid, J. - 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. 1-6, č. článku 125024. ISSN 0741-3335. E-ISSN 1361-6587
R&D Projects: GA MŠMT EF16_019/0000789; GA MŠMT LQ1606; GA MŠMT LTT17015
EU Projects: European Commission(XE) 654148 - LASERLAB-EUROPE
Grant - others:OP VVV - ADONIS(XE) CZ.02.1.01/0.0/0.0/16_019/0000789
Institutional support: RVO:68378271
Keywords : magnetic field * capacitor coil * laser matter interaction
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 2.458, year: 2020
Method of publishing: Limited access
https://doi.org/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/11104/0313216