Galvanic manifestation of coherent degenerate Zeeman sublevels in a gas discharge

18th International Summer School on Vacuum, Electron and Ion Technologies

Steflekova, V.^1 ; Zhechev, D.^1

Acad. G. Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tsarigradsko Chaussee, 1784 Sofia, Bulgaria^1

关键词: Coherent state;    Excited atoms;    Gas discharge;    Hollow cathode discharge;    Optically induced;    Self-aligned;    Time-resolved;    Zeeman sublevels;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/514/1/012053/pdf
DOI  :  10.1088/1742-6596/514/1/012053

来源: IOP

【 摘 要 】

The degenerate Zeeman sublevels were found to contribute to the ionization in a gas discharge in accordance with their coherent state. The voltage across the discharge was monitored while the same ensemble of excited atoms was alternately self-aligned nonaligned or oriented aligned. In the latter case, the coherence was optically induced; the corresponding opto-galvanic signals, i.e. amplitude- and time-resolved ones, were compared. Each state of the ensemble of degenerate Zeeman sublevels, i.e. (self-) aligned, oriented or disordered was characterized by its own rate of ionization. Various hollow cathode discharge (HCD) media were studied, namely, Ne/As, Ne/Cu, Ne/Ni, Ne/Cd, Ne/Li and Ne/Si in the corresponding commercial HCD spectral lamps.