Patent ID: 8436991
Filing Date: 2013-05-07
Classification: G01J,G01N

Abstract:
1. A device for analyzing materials by plasma spectroscopy, the device comprising a laser generator, laser pulse focusing means for focusing laser pulses produced by the generator onto a material to be analyzed, plasma light pick-up means for picking up light from the plasma produced by the laser pulses at the surface of the material, and transmission means for transmitting said light to a spectrometer associated with photodetectors having outputs connected to data processor means, wherein the laser pulse focusing means and the plasma light pick-up means are constituted by an optical system mounted with the laser generator and laser generator control cards in a housing that is portable and suitable for handling in one hand, the optical system being mounted in the housing between the laser generator and an outlet window and comprising a first parabolic mirror for focusing the laser beam on the material to be analyzed and for picking up the light from the plasma, and two plane mirrors arranged relative to the first parabolic mirror to reflect to said mirror the laser pulses emitted by the generator and to reflect the light from the plasma as received from the first parabolic mirror to a second parabolic mirror that focuses said light on one end of the transmission means connected to the spectrometer.