Sensitive elemental detection using microwave-assisted laser-induced breakdown imaging

摘要: Abstract This study reports a sensitive spectroscopic method for quantitative elemental detection by manipulating the temporal and spatial parameters of laser-induced plasma. The was tested indium in solid samples, which laser ablation used to generate tiny lifetime plasma can be extended hundreds microseconds using microwave injection remobilize electrons. In this novel method, integrated signal emission significantly enhanced. Meanwhile, projected detectable area excited atoms also improved an interference-, instead diffraction-, based technique, achieved directly imaging microwave-enhanced through narrow-bandpass filter, exactly centered at line. Quantitative laser-induce breakdown spectroscopy recorded simultaneously with new method. intensities from both methods exhibit very good mutual linear relationship. intensity 14-folds because combined improvements detection.