Stable plasma configurations in a cylindrical magnetron discharge

Levchenko, I.; Romanov, M.; Keidar, M.; Beilis, I. I.
September 2004
Applied Physics Letters;9/20/2004, Vol. 85 Issue 12, p2202
Academic Journal
Transition between different plasma configurations is studied in a system with negative biased cylindrical target in crossed E×B fields. It was found that the diffuse plasma torus formed around the cylindrical target in relatively small magnetic field (0.02 T on target surface) changes the shape with magnetic field to form a thin disk with a width lower than 1 cm when target voltage is less than -400 V. The target current decreases sharply when the magnetic field reaches some critical value. When the target voltage exceeds 400 V, the target current increases with the magnetic field and the plasma has always toroidal shape. The plasma behavior can be understood taking in account the interaction of the drift currents and the magnetic field.


Related Articles

  • The role of magnetic reconnection and differential rotation in spheromak formation. Guzdar, P. N.; Finn, John M.; Whang, K. W.; Bondeson, A. // Physics of Fluids (00319171);Oct85, Vol. 28 Issue 10, p3154 

    The physical processes involved in the formation of a spheromak are studied. Using one-fluid axisymmetric resistive magnetohydrodynamic equations together with a temperature equation, investigations of the essential physics aspects of the formation specifically for the new Maryland Spheromak...

  • Analytic Examples of Force-Free Toroidal MHD Equilibria. Martynov, A. A.; Medvedev, S. Yu. // Plasma Physics Reports;Apr2002, Vol. 28 Issue 4, p259 

    Analytically described toroidal (axisymmetric and three-dimensional) equilibrium magnetic field configurations with a �flat� current density, j = ?B(?=const), are proposed. Such configurations are superpositions of several force-free two-dimensional configurations with plane, axial, or...

  • Representation of magnetic fields with toroidal topology in terms of field-line invariants. Lewis, H. Ralph // Physics of Fluids B: Plasma Physics;Nov90, Vol. 2 Issue 11, p2551 

    Beginning with Boozer’s representation of magnetic fields with toroidal topology [Phys. Fluids 26, 1288 (1983)], a general formalism is presented for the representation of any magnetic field with toroidal topology in terms of field-line invariants. The formalism is an application to the...

  • The n=1 rotational instability in field-reversed configurations. Tuszewski, M.; Barnes, G. A.; Baron, M. H.; Chrien, R. E.; Hugrass, W. N.; Klingner, P. L.; Ng, Chun; Rej, D. J.; Taggart, D. P.; Siemon, R. E.; Wright, B. L. // Physics of Fluids B: Plasma Physics;Nov90, Vol. 2 Issue 11, p2541 

    Data from an array of external probes provide the first clear evidence for the n=1 rotational instability in field-reversed configurations. The time evolution and the axial structure of this instability are clarified.

  • Locked modes and magnetic field errors in the Madison Symmetric Torus. Almagri, A. F.; Assadi, S.; Prager, S. C.; Sarff, J. S.; Kerst, D. W. // Physics of Fluids B: Plasma Physics;Dec92, Vol. 4 Issue 12, p4080 

    In the Madison Symmetric Torus (MST) reversed-field pinch [Fusion Technol. 19, 131 (1991)] magnetic oscillations become stationary (locked) in the lab frame as a result of a process involving interactions between the modes, sawteeth, and field errors. Several helical modes become phase locked to...

  • Vacuum magnetic field structure of compact torii. Sobeˇhart, Jorge R. // Physics of Fluids B: Plasma Physics;Jan90, Vol. 2 Issue 1, p222 

    A new class of axisymmetric vacuum field solutions of the Grad–Shafranov equation, which is suitable for describing the field external to a compact torus equilibrium, is presented. In particular, solutions that match straight field lines at infinity are studied.

  • The 2-Extendability of Graphs on the Projective Plane, the Torus and the Klein Bottle. Mizukai, Iwao; Negami, Seiya; Suzuki, Yusuke // Graphs & Combinatorics;Jul2010, Vol. 26 Issue 4, p549 

    A graph is said to be k- extendable if any independent set of k edges extends to a perfect matching. We shall show that every 5-connected graph of even order embedded on the projective plane and every 6-connected one embedded on the torus and the Klein bottle is 2-extendable and characterize the...

  • Boundary-Reducing and Toroidal Dehn Fillings at the Maximal Distance. Sangyop Lee // IMRN: International Mathematics Research Notices;2016, Vol. 2016 Issue 15, p4487 

    If a hyperbolic 3-manifold admits boundary-reducing and toroidal Dehn fillings on a torus boundary component, then the distance between the filling slopes is known to be at most 2. In this paper, we determine all hyperbolic 3-manifolds admitting such a pair of Dehn fillings at distance 2.

  • Magnetic lines of force in a Tornado trap. Abramova, K. B.; Voronin, A. V.; Lev, M. L.; Semenov, A. A.; Sklyarova, E. M. // Technical Physics;Jan97, Vol. 42 Issue 1, p25 

    Numerical methods are used to analyze the structure of the magnetic field of an ideal Tornado trap; i.e., a trap consisting of linear currents whose magnitude and location in space are such as to produce a spherical separatrix with a radius ?[sub c] between the helices of the trap and partition...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics