Let me share the results of the experiment. A metal anode cylinder with a conical shape inside with a smaller diameter of 1 cm to the upper part of the neck was placed in the long neck (8 cm x 3 cm) of a one-and-a-half liter laboratory conical flask. A cathode (diameter 0.8 mm) was placed along the axis of the anode through a fluoroplastic insulator, and a coil was placed outside the neck of the bulb, creating an axial magnetic field inside the anode. The tests were carried out in the laboratory of the local university (but without the knowledge of the management), which has the necessary electrical equipment. The experiment showed that the breakdown occurs at 6 kV, but then the voltage drops sharply to hundreds of volts and a stable plasma is formed. However, despite the presence of crossed electric and magnetic fields, the plasma does not rotate and no plasmoid is formed. The fluoroplastic insulator begins to melt, from which it can be concluded that the plasma temperature is about 300 degrees. It seems that I was hoping in vain for the promotion of atmospheric air in the crossed fields. Existing plasma vortex devices (plasma centrifuges), which are used to separate uranium isotopes, work with evacuated gases.
And yet, I still have hope that in aerodynamically swirled air, in which there is a nonlinear distribution of radial pressure, Paschen's law does not work and it will be possible to significantly increase the operating voltage of the plasma in order to turn on the mechanism of plasma spinning in crossed fields. Do you think it is possible to spin the gas in the flask using a centrifuge, or do you still need to put a high-speed propeller in the flask?