Generation of large-volume high-pressure plasma by spatiotemporal control of space charge
Any attempt to scale pressure and volume of nonthermal plasma usually leads to instabilities due to the formation of localized space charge. The control of the plasma is limited by the discharge geometry, type of excitation, and gas composition. This article explores the possibility of controlling the space charge in a discharge with a spatially and temporally varying electric field. It is shown that a phase-staggered sinusoidal excitation to a set of conformal azimuthal electrodes in a cylindrical geometry leads to a traveling electric field. Simulations show that in space charge dominated transport, the charged species are dispersed both in the radial and azimuthal directions. This will lead to better control of the space charge and stable discharges near atmospheric pressures.
- Research Organization:
- Old Dominion Univ., Norfolk, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- Grant/Contract Number:
- SC0020183
- OSTI ID:
- 1603337
- Alternate ID(s):
- OSTI ID: 1602332
- Journal Information:
- AIP Advances, Vol. 10, Issue 3; Related Information: AIP Advances 10, 035002 (2020); doi: 10.1063/1.5143923; ISSN 2158-3226
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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