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Excitation space anisotropy, coherence and coherent conductivity in hollow cathode discharge

Zhechev D., Parvanova N.

Opto-Electronics Review

2003

Vol. 11, No. 1

51-54

Based on the excitation space anisotropy a partial polarisation of the spontaneous emission is found in hollow cathode discharge. This polarisation is ascribed to existing spontaneous coherence, i. e., self-alignment of the excited states. The aligning factors are the beam-like fast electrons from the cathode dark space. An expression for observed signal of the spontaneous emission magnetic depolarisation is obtained. Withim the frames of the ordinary opto-galvanic effect a separate coherent conductivity is analysed. a poor coherent conductivity due the self-aligned states is detected.