The local field distribution in the vicinity of needle tip under the existence of streamer

Yasui, Yoshihiro; Yamazawa, K.; Yamashita, H.

doi:10.1109/icdl.1999.798884

Cited by 2 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, the streamer is incepted in the liquid when a single electron avalanche reaches a critical size N cr . According to [1, 7], the growth of a single electron avalanche can be described as:

n_{e} = n_{0} \exp ((), \int_{0}^{x i} α ((), E ((), x), ρ_{l}) d x)

where n e is the number of electrons generated during the development of an avalanche, n 0 is the number of electron initiating the electron avalanche and xi is the penetration depth. α is the electron collision ionization coefficient of the liquid which depends on the fluid density ρ l and the field distribution near to the point electrode E ( x ), where E c < E ( x ) < E s .…”

Section: Discussionmentioning

confidence: 99%

“…Thus, the streamer is incepted in the liquid when a single electron avalanche reaches a critical size N cr . According to [1,7], the growth of a single electron avalanche can be described as:…”

Section: Discussionmentioning

confidence: 99%

“…5 mm) are also dependent on the curvature of the point electrode [5]. For instance, streamers initiated at point electrodes (positive and negative polarities) with radius of curvature between approximately 1 and 6 μm, are characterised by their slow velocity (∼100 m/s) and irregular, but rounded, shape [5][6][7][8]. In negative polarity, this streamer type is usually referred to as first-mode negative streamer [2,3,6].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

First‐mode of negative streamers: Inception at liquid/solid interfaces

et al. 2021

View full text Add to dashboard Cite

An experimental study of the inception of the first‐mode negative streamer at liquid/solid interfaces is presented in this article. The study is performed with a point‐plane configuration under square high voltage pulses. The electrode configuration is immersed in mineral oil and the liquid/solid interface is assembled in contact with the point electrode or in its vicinity. Four polymers and two impregnated papers have been tested as solids of the liquid/solid interface. Thus, it is possible to compare the influence of different parameter of the solid and the interface on the streamer inception. For example: Permittivity, solid surface roughness, chemical composition, etc. It has been observed that streamer inception voltages at interfaces with solids of higher permittivity to that of the mineral oil are statistically similar. Additionally, streamer inception voltages of streamer initiated free in the oil (no liquid/solid interface) are similar to that of the inception voltage of cases with solids with high permittivity. In contrast, the inception voltage of streamers initiated at permittivity matched interfaces are shown to be highest of the cases. The streamer inception voltage is also studied for different distances between the liquid/solid interface and the point electrode with a permittivity matched interface. The results show a dependency of the inception voltage and the distance between the point electrode and the interface. Finally, an analysis of the observation is performed to show that the Townsend‐Meek criterion cannot predict the obtained results.

show abstract

“…Thus, the streamer is incepted in the liquid when a single electron avalanche reaches a critical size N cr . According to [1, 7], the growth of a single electron avalanche can be described as: