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Updated: Dec 29, 2025

Building Langmuir Probes and Emissive Probes for Plasma Potential Measurements in Low Pressure, Low Temperature Plasmas
Published on: May 25, 2021
Investigation of ion acceleration effect influence on formation of ambipolar potential profile in the expander region
I S Abramov1, E D Gospodchikov1, R A Shaposhnikov1
1Institute of Applied Physics, Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia.
Abstract:
This paper presents a study of plasma flux characteristics flowing out from the gas-dynamic mirror trap along the magnetic field lines to a metal wall. The main feature of the current work is that the effect of ion acceleration by ambipolar potential is considered in the expander region. The developed model also takes into account a possibility of transition from the collisional expansion of electron flow in the vicinity of the magnetic plug to the collisionless regime. The developed model allows calculation of the ambipolar potential profile and plasma characteristics in the expander region.
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