Fine structure in the time of flight distribution of C2 in laser produced plasma from graphite
S S Harilal Riju C Issac C V Bindhu V P N Nampoori C P G Vallabhan
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Time resolved optical emission spectroscopy is employed to study the expansion dynamics of C2 species in a graphite plasma produced during the Nd : YAG ablation. At low laser fluences a single peak distribution with low kinetic energy is observed. At higher fluences a twin peak distribution is found. It has been noted that these double peak time of flight distribution splits into a triple peak structure at distances ≥17mm from the target surface. The reason for the occurrence of multiple peak is due to different formation mechanisms of C2 species.
S S Harilal1 Riju C Issac1 C V Bindhu1 V P N Nampoori1 C P G Vallabhan1
Volume 97, 2023
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