Abstract
Emission of neutral N atoms and CN molecules has been studied in the plasma produced by focusing a 200 mJ Nd: YAG laser onto a graphite target in air. Emission of atomic fines appears at early times. The Stark broadening of these lines is strongly time dependent due to the evolution of electron density in the plasma. At later times the spectrum is dominated by the CN violet system B 2Σ- X 2Σ. In the range from 1 to 20 μs the population of B 2Σ rovibrational levels can be described by a temperature of about 8500 K.
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