The Analytical Chemistry Branch Laser Microprobe Facility for the Elemental Analysis of Small Features of a Sample

摘要

The report describes the capabilities of a laser microprobe for elemental analysis of small areas of heterogeneous samples. This instrument uses the focused beam of a pulsed laser to evaporate a small volume of material from a relatively massive sample. The vapor so produced is excited to emission of optical radiation characteristic of the elemental composition of the selected area of the sample. This radiation is analyzed by conventional emission spectroscopic methods to produce qualitative and/or quantitative information about the composition of the chosen region of the sample. (Author)