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Article Dans Une Revue Journal of Plasma Physics Année : 2014

In-situ diagnostics of hydrocarbon dusty plasmas using quantum cascade laser absorption spectroscopy and mass spectrometry

Résumé

The formation of carbon nanoparticles in low pressure magnetized H2/CH4 and H2/C2H2 plasmas is investigated using infrared quantum cascade laser absorption, mass spectrometry, and electrostatic probe measurements. Results showed that dust formation is correlated to the presence of a significant amount of large positively charged hydrocarbon ions. Large negative ions or neutral hydrocarbon were not observed. These results, along with a qualitative comparison of diffusion and reaction characteristic, suggest that a positive ion may contribute to the growth of nanoparticles in hydrocarbon magnetized plasmas.
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Dates et versions

hal-01056751 , version 1 (20-08-2014)

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Citer

K. Ouaras, L. Colina Delacqua, G. Lombardi, J. Röpcke, M. Wartel, et al.. In-situ diagnostics of hydrocarbon dusty plasmas using quantum cascade laser absorption spectroscopy and mass spectrometry. Journal of Plasma Physics, 2014, pp.1-9. ⟨10.1017/S0022377814000361⟩. ⟨hal-01056751⟩
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