Abstract
We have demonstrated a method that enables the instant analysis of the results of laser-induced breakdown spectroscopy (LIBS) using high-density jet-type gas pulses synchronized with laser pulses. It was easily measurable without an auxiliary chamber and showed the performance of an ordinary buffer gas. Several parameters were identified to obtain an effective signal enhancement, and LIBS signals according to the height of a laser-induced plasma were investigated. The spatial distribution of the injected gas jet was surveyed by LIBS and the optimal observation position was verified. It was applied to several substances and the remarkable result of increasing the limit of detection was established especially for soft materials.
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