Method and apparatus for optically coupling an element analysis

Details Method and apparatus for optically coupling an element analysis Method and apparatus for optically coupling an element analysis

1989-09-29

1991-02-26

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

G01J 3443, G01N 2163

Patent

active

049957236

ABSTRACT:
A method of analyzing elements of a metal melt contained in a melting vessel comprises the following steps: introducing an inert gas at a temperature in excess of 300.degree. C. laterally into a tube passing through a lateral wall of the melting vessel and opening thereinto; generating a laser beam; passing the laser beam through an adjustable first lens system; reflecting the laser beam by a mirror into the tube; guiding the laser beam through a quartz window which closes the tube; generating a plasma in the tube by focusing the laser beam by the adjustable first lens system onto the surface of the metal melt in the tube; guiding the light generated by the plasma through the quartz window to an adjustable second lens system; coupling the light by the adjustable second lens system with an optical waveguide; and introducing the light by the optical waveguide into a spectrometer.

REFERENCES:
patent: 4818106 (1989-04-01), Koch et al.

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