Laser-Induced Breakdown Spectra in a Coal-Fired MHD Facility

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A study of laser-induced breakdown spectroscopy (LIBS) has been performed in a particle-loaded methane/air flame and in the Diagnostic Instrumentation and Analysis Laboratory/Mississippi State University (DIAL/MSU) test stand to evaluate its application for practical environments. The LIBS spectra collected from different observational directions and spectral regions are compared. The forward LIBS technique has been chosen to characterize the upstream region of a large magnetohydrodynamics (MHD) coal-fired flow facility (CFFF). The relative concentrations of several species are inferred by fitting the observed CFFF LIBS spectra with computer-simulated spectra. This paper reports the first LIBS experiments in a harsh, turbulent, and highly luminous coal-fired MHD combustion environment.

Keywords: Coal combustion; Elemental analysis; Laser-induced breakdown spectroscopy; Magnetohydrodynamics

Document Type: Research Article


Affiliations: Diagnostic Instrumentation and Analysis Laboratory, Mississippi State University, Mississippi State, Mississippi 39762

Publication date: November 1, 1995

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