Laser plasma plume kinetic spectroscopy of the nitrogen and carbon species |
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Authors: | Z Zelinger M Novotný J Bulí J Lan
ok P Kubt M Jelínek |
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Institution: | Z. Zelinger,M. Novotný,J. Bulíř,J. Lančok,P. Kubát,M. Jelínek |
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Abstract: | The formation and decay of carbon and nitrogen atoms, CN radicals and C2 molecules were monitored using spatial‐ and time‐resolved emission spectroscopy in a plasma plume formed during laser ablation of a graphite target in nitrogen atmosphere. A simple exponential model was used to explain the effect of the individual chemical reactions and plasma dynamics on the measured kinetic characteristics. The succession of emissions C → N → CN was observed in the time‐resolved spectra, supporting the suggestion that the CN radical is formed mainly by the direct reaction C + N → CN or C2 + N2 → 2CN. The formation of CN radical was enhanced by the additional generation of atomic nitrogen through the RF discharge. (© 2003 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) |
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Keywords: | Laser ablation laser plasma emission spectroscopy plasma reactions RF discharge |
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