A study of current controlled discharge in a nitrogen filled tube

0552107 - FZÚ 2022 RIV CH eng J - Journal Article
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
R&D Projects: GA MŠMT LTT17015; GA MŠMT EF15_003/0000449
Grant - others:OP VVV - HiFi(XE) CZ.02.1.01/0.0/0.0/15_003/0000449
Research Infrastructure: ELI Beamlines III - 90141
Institutional support: RVO:68378271
Keywords : plasma * discharge * interferometry * MHD simulation * magnetohydrodynamics
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 2.838, year: 2021
Method of publishing: 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.
Permanent Link: http://hdl.handle.net/11104/0327252