Noble gas detection and determination

Details Noble gas detection and determination Noble gas detection and determination

1999-03-31

2000-06-06

Font, Frank G.

Optics: measuring and testing

By dispersed light spectroscopy

With raman type light scattering

G01J 344

Patent

active

06072577&

ABSTRACT:
Disclosed is the determining of a composition of a gas mixture comprising an amount of one or more noble gases. A Raman spectrum of the gas mixture is measured first, and the amount(s) of Raman-active gas(es) in the gas mixture are determined based on the measured Raman spectrum. The amount of the (Raman non-active) one or more noble gases in the gas mixture can then be determined from the determined amount(s) of Raman-active gas(es). The composition of the gas mixture can also be determined by analyzing the Raman scattering in combination with the Rayleigh scattering. Based on the measured Raman spectrum, the expected intensifies of the Rayleigh lines of the Raman-active gases in the gas mixture are determined. The amount of the noble gas in the gas mixture is represented by the difference of the summed up Rayleigh lines of the Raman-active gases to the Rayleigh line in the measured spectrum.

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European Search Report, EP 98 10 7197, Nov. 3, 1998.

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