| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Effect of Air Gap on Uniformity of Large-Scale Surface-Wave Plasma |
| LAN Chao-Hui1, HU Xi-Wei2, JIANG Zhong-He2, LIU Ming-Hai2 |
| 1Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 6219002College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074 |
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| Cite this article: |
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LAN Chao-Hui, HU Xi-Wei, JIANG Zhong-He et al 2009 Chin. Phys. Lett. 26 115201 |
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Abstract The effect of air gap on the uniformity of large-scale surface-wave plasma (SWP) in a rectangular chamber device is studied by using three-dimensional numerical analyses based on the finite difference time-domain (FDTD) approximation to Maxwell's equations and plasma fluid model. The spatial distributions of surface wave excited by slot-antenna array and the plasma parameters such as electron density and temperature are presented. For different air gap thicknesses, the results show that the existence of air gap would severely weaken the excitations of the surface wave and thereby the SWP. Thus the air gap should be eliminated completely in the design of the SWP source, which is opposite to the former research results.
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| Keywords:
52.35.Hr
52.50.Dg
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Received: 09 July 2009
Published: 30 October 2009
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| PACS: |
52.35.Hr
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(Electromagnetic waves (e.g., electron-cyclotron, Whistler, Bernstein, upper hybrid, lower hybrid))
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52.50.Dg
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(Plasma sources)
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