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Pure-element spectral matching for full-spectrum quantitative LIBS under vacuum toward fusion plasma–wall interaction diagnostics
Abstract Quantitative Laser Induced Breakdown Spectroscopy (LIBS) under high vacuum is important for in situ diagnostics of plasma–wall interactions (PWI) in nuclear fusion devices. In this work, we proposed a Pure Element Spectral Matching (PESM) method for full spectrum quantitative LIBS analysis under vacuum conditions. In PESM, LIBS spectra of pure Fe, Cr, Ni, and Mo acquired under identical conditions were us...