Optics: measuring and testing – By dispersed light spectroscopy – With sample excitation
Patent
1989-06-02
1990-11-06
McGraw, Vincent P.
Optics: measuring and testing
By dispersed light spectroscopy
With sample excitation
436155, 31511141, G01N 2173, G01N 3112, G01J 3443
Patent
active
049681427
ABSTRACT:
A closed inductively coupled plasma cell generates a relatively high power, low noise plasma for use in spectroscopic studies. A variety of gases can be selected to form the plasma to minimize spectroscopic interference and to provide a electron density and temperature range for the sample to be analyzed. Grounded conductors are placed at the tube ends and axially displaced from the inductive coil, whereby the resulting electromagnetic field acts to elongate the plasma in the tube. Sample materials can be injected in the plasma to be excited for spectroscopy.
REFERENCES:
patent: 4266166 (1981-05-01), Proud et al.
patent: 4473736 (1984-09-01), Bloyet et al.
patent: 4482246 (1984-11-01), Meyer et al.
patent: 4532219 (1985-07-01), Hagen et al.
Hof Douglas E.
Manning Thomas J.
Palmer Byron A.
Gaetjens Paul D.
Keesee LaCharles P.
McGraw Vincent P.
Moser William R.
The United States of America as represented by the United States
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