LASER SPECTROCHEMICAL ANALYSIS

摘要

A sample of material to be analyzed is applied in a thin layer to a substrate such as an elongated tape and then is illuminated by a laser beam of such wavelength and power that at least a portion of the sample is vapourized. The substrate is non-absorptive at the laser wavelength and therefore is unaffected by the laser beam. The vapourized matter is removed from the region at which vapourization takes place, and is subsequently excited in a plasma to facilitate analysis by a conventional spectrometer.