Electric field measurement in atmospheric pressure radiofrequency discharge in helium

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Authors

NAVRÁTIL Zdeněk JOSEPSON Raavo CVETANOVIĆ Nikola OBRADOVIČ Bratislav DVOŘÁK Pavel

Year of publication 2016
MU Faculty or unit

Faculty of Science

Citation
Description Phase resolved photon counting was applied to record low-resolved optical spectra of pre-breakdown light emitted in coplanar barrier discharge in helium. Light emissions from species as OH, N2+, He as well as thermoluminescence of Al2O3 ceramics were observed during the whole voltage period. Moreover, a light with continuum spectrum was observed shortly before the discharge breakdown. Assuming neutral bremsstrahlung as the origin of the continuum, electric field of 0.5-1 kV/cm was obtained in this discharge phase.
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