The paper investigates physical properties of a pulsed arc discharge of low (≈1 Pa) pressure created in argon by a plasma source with the thermionic and hollow cathodes. It is shown that the pulsed discharge is initiated in the extended hollow anode at a higher arcing voltage ranging between 100 and 300 V, thereby providing the current up to 800 А with the peak power of several tens of kilowatts. The growth in the arcing voltage leads to a reduced distribution heterogeneity of the plasma concentration by more than one order of magnitude throughout the hollow anode height. The axial magnetic field increased by the higher current in the magnetic coil leads to an increase in the non-self-sustained arc discharge at a higher arcing voltage.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 1, pp. 137–142, January 2022.
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Kovalsky, S.S., Denisov, V.V., Ostroverkhov, E.V. et al. Pulsed Non-Self-Sustained Arc Discharge in Extended Hollow Anode. Russ Phys J 65, 150–155 (2022). https://doi.org/10.1007/s11182-022-02617-1
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DOI: https://doi.org/10.1007/s11182-022-02617-1