Electrostatics 2015 | |
Current pulses caused by streamers in sphere-sphere electrode system | |
物理学;数学 | |
Chirkov, V.A.^1 ; Samusenko, A.V.^1 ; Stishkov, Yu K.^1 | |
Physics Department, St. Petersburg State University, Ulianovskaia 1, St.-Petersburg | |
198504, Russia^1 | |
关键词: Electric current pulse; Growing velocity; Low temperature plasmas; Negative streamers; Positive streamers; Sphere-sphere electrodes; Streamer corona; Strong electric fields; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/646/1/012042/pdf DOI : 10.1088/1742-6596/646/1/012042 |
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来源: IOP | |
【 摘 要 】
Streamer is a channel of a low temperature plasma growing due to ionization in the area of the strong electric field at the tip of the channel. Streamer investigation presents a technically highly complicated task due to fleetingness of the process: growing velocity is 106-107m/s and characteristic duration is 10-8-10-7s. The electric current pulse registration is a moderate method for investigating so fast process. However, the major part of streamer current investigations refers to low voltage range (about 103-104V) and short streamers length range 10-2-10-1cm. Also positive streamers are usually considered and there is a lack of information about current pulses caused by negative streamers. Both positive and negative streamers and their interaction are considered in the present paper. A multibranch streamer corona emerging at voltages above 250 kV and in long gaps (above 40 cm) was investigated.
【 预 览 】
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