Temporal Variation of Nano-Enhanced Laser Induced Plasma Spectroscopy (NELIPS)

NELIPS acronym standing for Nano-Enhanced Laser Induced Plasmas Spectroscopy. Within this framework, the temporal variation of the enhanced emission averaged over different emission wavelengths was measured within delay time from 1 to 7 ms at fixed laser irradiance and gate time of 1ms. Different nanomaterials were employed including silver, zinc, titanium and iron. Both of bulk and pure-nanomaterial plasmas were ignited under similar conditions by Nd-YAG laser radiation at 1064 nm. However, the pure nano-based plasma emission spectral line intensities was reveal to decline at a slower pace with time. Meanwhile, the average enhanced emission was found to increase in an exponential manner with time too. This, and a model was suggested based on the first derivative of enhancement with time, which was found precisely predicts this exponential variation in enhanced emission with time.