Analytical Expressions of Dual-Frequency Plasma Diagnostic Theory

CHENG Li (程立); SHI Jia-ming(时家明); XU Bo (许波)

doi:10.1088/1009-0630/14/1/09

Plasma Science and Technology > 2012 > 14(1): 37-39. > DOI: 10.1088/1009-0630/14/1/09

CHENG Li (程立), SHI Jia-ming(时家明), XU Bo (许波). Analytical Expressions of Dual-Frequency Plasma Diagnostic Theory[J]. Plasma Science and Technology, 2012, 14(1): 37-39. DOI: 10.1088/1009-0630/14/1/09

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Analytical Expressions of Dual-Frequency Plasma Diagnostic Theory

State Key Laboratory of Pulsed Power Laser Technology, Key Lab of Infrared and Low Temperature Plasma of Anhui Province, Electronic Engineering Institute, Hefei 230037, China

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Received Date: August 05, 2011

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Abstract

Abstract

Based on the fundamental ideas concerning microwave attenuation in plasma, we obtain a new expression of transmission attenuation of microwaves as a function of the incident wave frequency. And with reasonable hypothesis, analytical forms of the electron density and the electron-neutral collision frequency are derived from the equations of the transmission attenuation of microwaves at two near frequencies. This method gives an effective and easy approach to diagnose the unmagnetized plasma.
- plasma,
- diagnosis,
- dual-frequency,
- attenuation,
- electron density,
- electron-neutral collision frequency

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