学術雑誌論文

学術雑誌論文

Physical Review Letters. 2011, 107(6), p. 065002

Rapid breakdown mechanisms of open air nanosecond dielectric barrier discharges

American Physical Society

英語

2011-08-03

https://doi.org/10.1103/PhysRevLett.107.065002

Tsuyohito Ito, Tatsuya Kanazawa, and Satoshi Hamaguchi, Physical Review Letters 107, 065002, 2011

The discharge initiation mechanism of nanosecond dielectric barrier discharges in open air has been clarified with time-dependent measurement of the discharge electric field by electric-field-induced coherent Raman scattering and optical emission. Our experimental observations have revealed that, in the prebreakdown phase of a nanosecond dielectric barrier discharge, the externally applied fast-rising electric field is strongly enhanced near the cathode due to large accumulation of space charge, which then strongly enhances ionization near the cathode. Once a sufficiently large number of ionizations take place, the location of peak ionization forms a front and propagates toward the cathode with strong optical emission, which establishes the discharge. This process is essentially different from the well-known Townsend mechanism for slower discharges. © 2011 American Physical Society.

Copyright (2011) by the American Physical Society.

78473

Rapid breakdown mechanisms of open air nanosecond dielectric barrier discharges

American Physical Society

英語

2011-08-03

Physical Review Letters

107

6

065002

https://doi.org/10.1103/PhysRevLett.107.065002

https://hdl.handle.net/11094/78473