Applied Optics · 2013 · 12 citations · 11 references
Natural SciencesPhysicsSoil SciencesOpticsPlasma PhysicsSpectroscopyEmission SpectroscopyLaser OpticsLaser PhysicsLaser-plasma InteractionsOptical SpectroscopyPlasma DiagnosticsEmission SpectraEmission Spectra AnalysisLaser-induced BreakdownLaser-induced Breakdown SpectroscopyOptical BreakdownSignal-to-noise Ratio AnalysisSignal-to-noise Ratio EnhancementSpectral Line Intensities
Laser-induced breakdown spectroscopy quality can be improved by using a nanosecond Nd:YAG laser pulse to excite soil samples. To investigate how flat-mirror reflection affects the radiation characteristics of laser-induced plasma, emission spectra of sample elements were recorded using a grating spectrometer and photoelectric detection system. Placing a planar mirror vertically on the sample surface (10 mm mirror to plasma-center axis distance) for flat-mirror reflection increased spectral line intensities of Mg, Al, Fe, and Ba by 93.06%, 159.63%, 93.43%, and 94.61%, respectively. Signal-to-noise ratio increased by 17.56%, 40.21%, 31.29%, and 30%. The radiation enhancement mechanism was clarified using measured plasma parameters.
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Optimization of laser-induced breakdown spectroscopy for rapid geochemical analysis
J. Tucker, M. D. Dyar, M. W. Schaefer et al. · Chemical Geology · 2010 · 126 citations