E-viri
Odprti dostop
-
Sheath characteristics in collisional magnetized plasma with nonextensive electrons and thermal ionsMohsen Mohammadnejad; Afshin Arghand-Hesar
Iranian Journal of Physics Research, 05/2022, Letnik: 22, Številka: 1Journal Article
Sheath formation and its characteristics are studied in collisional magnetized plasma consisting of nonextensive electrons and thermal ions. Using two-fluid model, the Bohm criterion for ion velocity is deduced as a function of plasma parameters and shown that ion-neutral collisions impose an upper limit for the Bohm criterion. It is also found that deviation from the standard Maxwellian distribution significantly affects the sheath characteristics. Sheath potential and ion density are considered under the effects of magnetic field, ion temperature, nonextensivity and ion-neutral collision frequency. The results indicate that by applying an external magnetic field, it is possible to control the sheath thickness.
