Time-resolved optical emission spectra of (Swan band, , ) and CN (Violet band, , ) molecules at (a) Ar and (b) , respectively. The emission was sampled at away from the target surface. The laser fluence was .
Normalized peak emission intensity of (a) at and (b) CN at vs delay time at .
The arrival time of peak emission intensity of vs background gas pressure for He, Ar, and .
Simulation of the optical emission spectrum for Swan band and CN Violet band with and . spectrum was obtained at delay time in He . CN spectrum was obtained at delay time in and simulated with and . Note that emission from Deslandres D’Azambuja system was also observed in the ultraviolet region.
Vibrational temperatures of molecules at different background gas pressures for He, Ar, and .
Rotational temperatures of molecules at different background gas pressures for He, Ar, and .
Vibrational and rotational temperatures of CN molecules at different pressures of .
The variation of rotational and vibrational temperature of CN molecules at delay time as a function of the pressure.
The variation of (a) rotational and (b) vibrational temperatures of molecules at delay time in different pressures for He, Ar, and .
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