A study of current controlled discharge in a nitrogen filled tube

0552107 - FZÚ 2022 RIV CH eng J - Článek v odborném periodiku
Nevrkla, Michal - Hübner, J. - Šišma, Jiří - Vrba, P. - Vrbová, M. - Bobrova, N. - Sasorov, Pavel - Jančárek, A.
A study of current controlled discharge in a nitrogen filled tube.
Applied Sciences-Basel. Roč. 11, č. 21 (2021), č. článku 1053. E-ISSN 2076-3417
Grant CEP: GA MŠMT LTT17015; GA MŠMT EF15_003/0000449
Grant ostatní: OP VVV - HiFi(XE) CZ.02.1.01/0.0/0.0/15_003/0000449
Výzkumná infrastruktura: ELI Beamlines III - 90141
Institucionální podpora: RVO:68378271
Klíčová slova: plasma * discharge * interferometry * MHD simulation * magnetohydrodynamics
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 2.838, rok: 2021
Způsob publikování: Open access

Time dependencies of the electrical resistance and electron density evolution in the discharge in a tube, with nitrogen at different pressures, with a diameter of 9.2mm and a length of 10cm were studied. A current pulse with an amplitude of 500A and duration of 10 mu s has created the discharge in the tube. Instantaneous electron densities are estimated from the interference pattern in Mach-Zehnder interferometer using femtosecond Ti: sapphire laser beam. Laboratory results are compared with results of computer modelling by MHD computer codes NPINCH and ZSTAR. Time development of the discharge resistance according to experiment is measured and evaluated. Minimum measurable value of the electron density in the experiment is determined as 2x1015cm-3.
Trvalý link: http://hdl.handle.net/11104/0327252