Characterization of magnetohydrodynamic effects in a plasma opening switch

Autor:	E.J. Yadlowsky, J. J. Moschella, Robert C. Hazelton, G. G. Spanjers
Rok vydání:	1995
Předmět:	Two-stream instability Physics::Plasma Physics Chemistry Ionization Physics::Space Physics Dynamics (mechanics) General Physics and Astronomy Plasma Magnetohydrodynamic drive Atomic physics Magnetohydrodynamics Axial symmetry Ion
Zdroj:	Journal of Applied Physics. 77:3657-3667
ISSN:	1089-7550 0021-8979
Popis:	Plasma dynamics are characterized in a long‐conduction time plasma opening switch [Phys. Fluids B 4, 2368 (1992)] operated with densities and currents near the theoretical intersection of the magnetohydrodynamic (MHD) [IEEE Trans. Plasma Sci. PS‐19, 400 (1991)] and electronmagnetohydrodynamic (EMH) [Phys. Fluids B 3, 1908 (1991)] regimes. In agreement with MHD theory, a hydrodynamic snowplow is observed to translate axially and reach the load end of the switch at opening. The axial motion of the front agrees with one‐dimensional analytic predictions if the carbon plasma possesses an average ionization of 1, but is significantly less than theory if higher ionization levels are present. The axial motion of the plasma center‐of‐mass is significantly less than that expected from theory for any ionization level. The reduced center‐of‐mass motion is attributed to an ion loss mechanism in the unconfined switch plasma, an effect also observed in the total particle inventory, which saturates while the source plasm...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5898d89930155f21a9e08ebc9a41c899 https://doi.org/10.1063/1.358603 Zobrazit plný text záznamu