Chiral streamers

Dandan Zou; Xin Cao; XinPei Lu; Kostya (Ken) Ostrikov

doi:10.1063/1.4934603

journal article Oct 01, 2015

Chiral streamers

Dandan Zou Xin Cao

XinPei Lu Kostya (Ken) Ostrikov

Physics of Plasmas Vol. 22 No. 10 · AIP Publishing

View at Publisher Save 10.1063/1.4934603

Abstract

The interaction of time-varying electromagnetic fields and solid, liquid, and gaseous matter may lead to electrical breakdown phenomena through the excitation of ionization waves or streamers that control the dynamics of localized plasma propagation through the media. The streamers usually propagate along straight lines, either between random points in space or along a certain direction in a guided mode. Here, we report on a new type of plasma discharges with the regular helical propagation pattern driven by a pulsed dc voltage in nitrogen at sub-atmospheric-pressure conditions. The helical guided streamers, named chiral streamers or chi-streamers, are excited without any external magnetic fields, which commonly cause helical plasma motions. We also demonstrate a hybrid propagation mode involving the interchangeable chiral streamers and the straight-line propagating plasmas. High-speed, time-resolved optical imaging reveals that the chiral streamers and the hybrid patterns are made of spatially localized discrete plasma bullets, similar to the straight-line guided streamers. These results may enable effective control of propagation of confined plasmas and electromagnetic energy along pre-determined, potentially deterministic paths, which have important implications for the development of next-generation plasma-based radiation sources, communication devices, and medical treatments.

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References

Details

Published: Oct 01, 2015
Vol/Issue: 22(10)

Authors

D

Dandan Zou

Huazhong University of Science and Technology 1 State Key Laboratory of Advanced Electromagnetic Engineering and Technology, , Wuhan, Hubei 430074, People's Republic of China

X

Xin Cao

Huazhong University of Science and Technology 1 State Key Laboratory of Advanced Electromagnetic Engineering and Technology, , Wuhan, Hubei 430074, People's Republic of China

X

XinPei Lu

Huazhong University of Science and Technology 1 State Key Laboratory of Advanced Electromagnetic Engineering and Technology, , Wuhan, Hubei 430074, People's Republic of China; Shanghai Jiao Tong University 2 IFSA Collaborative Innovation Center, , Shanghai 200240, People's Republic of China

K

Kostya (Ken) Ostrikov

Queensland University of Technology 3 School of Chemistry, Physics and Mechanical Engineering, , Brisbane, Queensland 4000, Australia; Comonwealth Scientific and Industrial Research Organization 4 , P.O. Box 218, Sydney, New South Wales 2070, Australia

Funding

National Natural Science Foundation of China Award: 51077063

Changjiang Scholar Program of Chinese Ministry of Education

Australian Research Council and CSIRO's Science Leadership Program

Research fund for the doctral program of higher education of China Award: 20100142110005

Cite This Article

Dandan Zou, Xin Cao, XinPei Lu, et al. (2015). Chiral streamers. Physics of Plasmas, 22(10). https://doi.org/10.1063/1.4934603

Chiral streamers

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