The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 1984
Filed:
Apr. 09, 1981
Thomas J Bridges, Holmdel, NJ (US);
AT&T Bell Laboratories, Murray Hill, NJ (US);
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.