Laser isotope detection and measurement

Details Laser isotope detection and measurement Laser isotope detection and measurement

1981-04-09

1984-07-31

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

2504581, G01N 2164

Patent

active

044626860

ABSTRACT:
The present invention relates to an apparatus for laser isotope detection and concentration measurement (LIDAM). A test sample containing first and second isotopes of a specific material or compounds formed with the first and second isotopes of the specific material is placed in an optical bridge with a standard sample containing known amounts of the first and second isotopes or compounds of the same. Laser radiation from a first and a second laser source is alternatively focused upon the two samples to produce fluorescence from the isotopes or compounds of the specific material. The laser material of the first laser source and the laser material of the second laser source are either the first and the second isotope respectively or compounds formed with the first and the second isotope respectively. Laser radiation from the first and the second laser source induces fluorescence only from the first and second isotope or compounds of the same in either the test or standard sample. The characteristic fluorescences induced are detected and used to determine the relative ratios of the first and second isotopes or compounds of the same in the test sample.

REFERENCES:
patent: 3936190 (1976-02-01), Ohnishi et al.
patent: 4068953 (1978-01-01), Harney et al.
patent: 4188120 (1980-02-01), McDonald et al.
Herriott et al., Applied Optics, vol. 4, No. 8, Aug. 1965, pp. 883-889.
Freed et al., Journal of Molecular Spectroscopy, vol. 49, 1974, pp. 439-453.
Wood et al., Optics Letters, vol. 5, No. 4, Apr. 1980, pp. 153-154.

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