Corona discharge of a vibrated insulating box with granular medium

@article{Schoenau2021CoronaDO,
  title={Corona discharge of a vibrated insulating box with granular medium},
  author={Laurent Schoenau and Tobias Steinpilz and Jens Teiser and Gerhard Wurm},
  journal={Granular Matter},
  year={2021},
  volume={23}
}
Corona discharges are luminous signs of strong local electric fields allowing a continuous discharge into the surrounding atmosphere. They commonly occur at the ends of conductors at high voltage. Here we report the observation of a faint glow surrounding an insulating cm-sized box filled with mm-sized basalt beads. At an ambient pressure in the mbar range two light bands occur as soon as and only if the box is vibrated and only if it is filled with a granular medium. In addition, a glow also… 
View on Springer
link.springer.com
4 Citations
Background Citations
1

4 Citations

Measuring electric dipole moments of trapped sub-mm particles

Violation of triboelectric charge conservation on colliding particles.

In microgravity experiments, the net charge on systems of two identical, 434-μm-diameter glass spheres before and after a collision is quantified and it is found that charge conservation is significantly violated.

Detection of Corona Faults in Switchgear by Using 1D-CNN, LSTM, and 1D-CNN-LSTM Methods

The damaging effects of corona faults have made them a major concern in metal-clad switchgear, requiring extreme caution during operation. Corona faults are also the primary cause of flashovers in…

Review of Medium-Voltage Switchgear Fault Detection in a Condition-Based Monitoring System by Using Deep Learning

In power energy distribution networks, switchgear is considered critical equipment. This is because the act of monitoring the operation and condition of switchgear, as well as performing the required…

References

SHOWING 1-10 OF 15 REFERENCES

Detection of spark discharges in an agitated Mars dust simulant isolated from foreign surfaces

A challenge for martian lightning: Limits of collisional charging at low pressure

The effect of vibrating conditions on the electrostatic charge in a vertical vibrating granular bed

Modeling the formation of electrostatic discharges on Mars

[1] Mars' low atmospheric pressure and arid, windy climate provide an environment that supports the triboelectric charging of dust. A laboratory experiment has been performed to demonstrate that the…

The effects of dynamics on the triboelectrification of volcanic ash

Lightning is often observed during explosive volcanic eruptions, and the charging processes associated with these displays have been attributed to several mechanisms. In this work we delineate a set…

Multiparametric observation of volcanic lightning: Sakurajima Volcano, Japan

We recorded volcanic lightning generated by Vulcanian explosions at Sakurajima Volcano using a synchronized multiparametric array. Physical properties of lightning are related to plume dynamics, and…

Will the Mars Helicopter Induce Local Martian Atmospheric Breakdown?

Any rotorcraft on Mars will fly in a low-pressure and dusty environment. It is well known that helicopters on Earth become highly charged due, in part, to triboelectric effects when flying in sandy…

Self-charging of identical grains in the absence of an external field

A mathematical Turing model is proposed that defines conditions for exponential charging to occur and provides insights into the mechanisms involved, and the predicted exponential growth in experiments using vibrated grains under microgravity is confirmed.

Electrical Breakdown Caused by Dust Motion in Low-Pressure Atmospheres: Considerations for Mars

Martian dust storms may reduce the atmospheric conductivity by capturing fast ions on particles, and, by electrifying, may cause discharges in the relatively low pressure atmosphere.

Long-standing and unresolved issues in triboelectric charging

Static electrification is among the earliest of the sciences, well known to us all and with widespread and important consequences. Yet, its most basic foundations remain poorly understood. For…