The paper presents the results of experimental and
theoretical study of the low current mode of negative
corona. The purpose of the study was to find the
electron emission mechanism that is responsible for
the rise of negative corona pulses.
The main idea of the study based on earlier
observations that the presence of non-metallic
inclusion at the electrode favours the rise of
negative corona discharge. For this reason a
systematic study of negative corona was carried out
also with electrodes, which had coatings of known
composition and thickness.
The results of the study confirm that the rise of
negative corona is controlled by Fowler-Nordheim type
of emission, which occurs at the metal-dielectric
interface.
theoretical study of the low current mode of negative
corona. The purpose of the study was to find the
electron emission mechanism that is responsible for
the rise of negative corona pulses.
The main idea of the study based on earlier
observations that the presence of non-metallic
inclusion at the electrode favours the rise of
negative corona discharge. For this reason a
systematic study of negative corona was carried out
also with electrodes, which had coatings of known
composition and thickness.
The results of the study confirm that the rise of
negative corona is controlled by Fowler-Nordheim type
of emission, which occurs at the metal-dielectric
interface.