A process for simultaneously blowing a gas jet onto a sample 6 to be analyzed and subsequently focusing a laser beam 4 onto the sample so as to produce a plasma 12 on the surface of the sample. An analysis is made of the spectrum S' of the light radiation emitted by the plasma and this spectrum analysis...http://www.google.ca/patents/US5583634?utm_source=gb-gplus-sharePatent US5583634 - Process for elementary analysis by optical emission spectrometry on plasma produced by a laser in the presence of argon