Diagnostics of dust particles in plasma chemical vapor deposition process emission spectroscopy and Langmuir probe

Wu Jing; Yao Lieming; Xue Lei

doi:10.3788/HPLPB20132505.1283

Volume 25 Issue 05

Mar. 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(05): 1283-1287

Tang Enling, Yang Minghai, Xiang Shenghai, et al. Microwave diagnosis of electromagnetic radiation produced by hypervelocity impact[J]. High Power Laser and Particle Beams, 2012, 24: 2212-2214. doi: 10.3788/HPLPB20122409.2212

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Wu Jing, Yao Lieming, Xue Lei. Diagnostics of dust particles in plasma chemical vapor deposition process emission spectroscopy and Langmuir probe[J]. High Power Laser and Particle Beams, 2013, 25: 1283-1287. doi: 10.3788/HPLPB20132505.1283

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Diagnostics of dust particles in plasma chemical vapor deposition process emission spectroscopy and Langmuir probe

doi: 10.3788/HPLPB20132505.1283

1.
School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China;
2.
Southwestern Institute of Physics,Chengdu 610041,China

Received Date: 2012-06-29
Rev Recd Date: 2012-10-20
Publish Date: 2013-03-12

Abstract

Abstract

Dust particles were produced in situ using reactive mixtures (SiH4/C2H4/Ar) in radio-frequency(RF) discharge. To get more information about dusty plasma, Langmuir probe and optical emission spectroscopy diagnoses were introduced. Then the emission intensities of Si+ 390.6 nm, Si2+ 380.6 nm and C+ 426.7 nm as a function of pressure, RF power, and flow rates of SiH4/C2H4 were presented. The emission intensities of Si+, Si2+ and C+ are enhanced with the increase of gas pressure and RF power. But as the flow rates of SiH4/C2H4 increase, the emission intensities are weakened. By using Langmuir probe, the density of dust particles was calculated from electron density and ion density, and then variation of the dust particle density with RF power was derived, which is basically consistent with the trend of SiH4/C2H4 dissociation.
- dusty plasma,
- RF discharge,
- Langmuir probe,
- optical emission spectroscopy

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