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On the Conductance of the Gas Discharge Plasma at Space Anisotropic Excitation
Author(s) -
Zhechev D.,
Steflekova V.,
Costello J. T.,
Bundaleska N.
Publication year - 2015
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201400102
Subject(s) - neon , degenerate energy levels , atomic physics , plasma , cathode , conductance , anisotropy , materials science , electric discharge in gases , atom (system on chip) , excitation , physics , optics , condensed matter physics , chemistry , argon , quantum mechanics , computer science , embedded system
The galvanic manifestation of two transformations of degenerate magnetic states of the neon atom, namely self‐alignment → non‐alignment and alignment ↔ orientation is studied by monitoring the voltage across the discharge in a range of hollow cathode discharge (HCD) lamps. The application of a magnetic field to the discharge disorders the self‐alignment. Alignment and orientation are optically induced and their effect on the discharge conductance is compared by measuring the optogalvanic signals. The degenerate states investigated are found to contribute to the gas discharge conductance in a manner which depends on their degree of coherence. Various hollow cathode discharge media are studied including Ne/As, Ne/Cu, Ne/Ni, Ne/Cd, Ne/Li and Ne/Ca in the corresponding trademarked HCD spectral lamps. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)