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The influence of an external magnetic field on a “macro” hollow cathode discharge (MHCD) in argon

D.-L. BIBOROSCH1,* , B.-J. LEE2, K. FRANK2, L. MARES1

Affiliation

  1. Faculty of Physics, Department of Plasma Physics, 11 Carol I, Al.I. Cuza-University, R-700506 Iasi, Romania
  2. Physics Institute I, F.-A.-University of Erlangen, Erwin-Rommel-Str. 1, D-91058 Erlangen, Germany

Abstract

The method with large “macro” hollow cathode geometry at low pressure is used to understand the discharge regime and IV characteristics of micro hollow cathode discharges (MHCD) at high pressures. We can use this method to study the influence of an external magnetic field on a dc discharge with MHCD geometry. Thus, if a strong axial magnetic field is applied at the open end of a “macro” hollow cathode, the negative glow emission in the centre of the hole is accompanied by a secondary annular ring, probable the first standing striation of the positive column in this coaxial geometry. Also the I-V “macro” characteristics are changed at these low pressures in the presence of this magnetic field..

Keywords

“Macro” hollow cathode, Axial magnetic field, I-V characteristics.

Submitted at: March 1, 2008
Accepted at: July 10, 2008

Citation

D.-L. BIBOROSCH, B.-J. LEE, K. FRANK, L. MARES, The influence of an external magnetic field on a “macro” hollow cathode discharge (MHCD) in argon, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 8, pp. 1968-1971 (2008)