Laser-Induced Plasma Excitation Source
A high-power CO2 laser that is focused into a support gas, such as Ar, can maintain a hot plasma. The energy of the plasma can atomize, excite, and ionize analyte species present in the support gas, which can then be detected and quantified by atomic-emission spectroscopy or mass spectrometry. It can also be used in a glow-discharge mode to sputter analyte atoms off of a solid surface for analysis in the plasma.
Copyright © 2000 by Brian M. Tissue, all rights reserved.