Patent ID: 6122050
Filing Date: 2000-09-19
Classification: G01J

Abstract:
A plasma emission spectrometer comprising:a) a plasma generator for creating a plasma having a central plasma channel with a longitudinal axis;b) detector means for detecting light radiation relative to spectral wavelength said detector means having an entrance aperture;c) an optical interface for sampling light radiation comprising at least a first optics element aligned with the longitudinal axis of the central plasma channel and a second optics element arranged cooperatively with said plasma generator and said detector means, the first optics element being located close to the plasma such that light radiation generated along the longitudinal axis of the central plasma channel is imaged by said first optics element and sampled by said optical interface, and directed into said detector means by said optical interface;d) means for introducing an analyte into said plasma created by said plasma generator; ande) a cooled skimmer placed between said first optics element and the plasma generated by said plasma generator,wherein said first optics element is a collimating lens and said second optics element is a focussing lens.