Method for elementary analysis through optical emission spectroscopy in a plasma produced by a laser beam in presence of Argon.

摘要

Method for elementary analysis by optical emission spectroscopy on a plasma produced by a laser in the presence of argon. According to the invention, the method consists, in a natural atmosphere, in: - simultaneously blowing a gas jet onto the sample (6) to be analysed and focusing a laser beam (4) on the said sample to be analysed, so as to produce a plasma (12) on the surface of this sample; - analysing a spectrum (S') of the light radiation emitted by the plasma; and - determining, on the basis of this spectral analysis, the isotopic composition of the sample.