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Effect of antenna configuration on power transfer efficiency for planar inductively coupled plasmas

Di Xiao-Lian Xin Yu Ning Zhao-Yuan

Effect of antenna configuration on power transfer efficiency for planar inductively coupled plasmas

Di Xiao-Lian, Xin Yu, Ning Zhao-Yuan
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  • Abstract views:  3587
  • PDF Downloads:  1515
  • Cited By: 0
Publishing process
  • Received Date:  06 December 2005
  • Accepted Date:  24 January 2006
  • Published Online:  01 October 2006

Effect of antenna configuration on power transfer efficiency for planar inductively coupled plasmas

  • 1. 苏州大学物理科学与技术学院,薄膜材料江苏省重点实验室,苏州 215006

Abstract: Based on a transformer model for inductively cowpled plasmas (ICPs), the dependence of power coupling efficiency on Q value, plasma electron density and effective electron-atom collision frequency is analyzed. The effect of coil configuration on power coupling efficiency is studied using four types of coils (one-turn, two-turn, three-turn and four-turn planar concentric coils) experimentally. The results indicate that the inductive discharge depends on coil inductance while the coupling efficiency varies with the Q value and discharge conditions such as pressure and input power. The coupling efficiency increases with the increase of pressure and input power, which is in accordance with the transformer model. However, the prediction given in the model that an increase in coil Q value improves power coupling efficiency is only applicable for coils with the same inductance. The study on power coupling efficiency for single multi-turn coil has been applied as an experimental reference for a large-area, high density inductive discharge source using four parallel multi-turn coils.

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