INSTALLATION OF SPECTROSCOPIC MEASUREMENTS FROM A LASER INDUCED PLASMA

摘要

The invention relates to a spectroscopic measuring installation comprising: - a focusing system (2) of a laser beam (3) on a sample to be analyzed (4), - a collection and analysis system by spectroscopy (17) light rays emitted by the plasma (15), this collection and analysis system (17) comprising in particular an optical fiber (18) for collecting light. According to the invention, the installation comprises: - a motorized system (23) for moving the optical fiber (18), - an optical imaging system (25) for the plasma, in the form of an image, - and a processing and control unit (24) comprising: • means for analyzing the image formed by the imaging optical system to select an area of interest, • means for controlling the motorized system (23) to place the optical fiber in a position to collect light from the selected area of interest of the plasma.