Research and Analysis of LIBS Spectra for Qualitative Data

Abstract

As the qualitative analysis software of laser induced breakdown spectra (LIBS) mainly relies on the principle of proximity and artificial identification, we developed a spectral data processing software, which manages background subtracting, filtering, peak searching and elements identifying, etc. The spectra database contains LIBS emission lines from the National Institute of Standards and Technology (NIST). The user can edit the database such as addition, correction or deletion of data. Using Cosine Similarity algorithm and combining of the database, the system is capable of being straight and fast in the determination the composition of the material by calculating the potential elemental composition of the sample, and will be a useful tool for LIBS.