Field method for detecting deposits containing uranium and thori

Details Field method for detecting deposits containing uranium and thori Field method for detecting deposits containing uranium and thori

1979-12-21

1982-06-22

Smith, Alfred E.

Radiant energy

Geological testing or irradiation

With sampling

250472, 250473, G01V 500, G01T 500

Patent

active

043364519

ABSTRACT:
Locations of buried deposits are determined by detecting the presence of Pb214, Bi214, Po214, Pb210, Bi210 and Po210 in solutions obtained by chemically leaching these elements from rocks and soil. Polonium from the solution is plated on silver foil planchets. Alpha sensitive films are exposed to the alpha decay of Po214 and Po210 by contacting the films with the planchets. The films, when etched, reveal the damage caused by the passage of the high energy alpha particles. Alpha damage as a function of sample size, volume of solution used, planchet, foil or film area and exposure times measures concentration of Po214 and Po210 in the sample. Anomalus concentrations suggest presence of buried deposits containing uranium. Similar anomalus concentrations of alpha damage from Bi212 and Po212 formed in films exposed to foils or planchets plated from leached solutions containing Pb212, Bi212 and Po212 suggest deposits containing thorium. Plotting normalized alpha damage population (numbers of alpha per gram, per square mm., per hour) and sample locations suggest mineral deposit locations.

REFERENCES:
patent: 3493751 (1970-02-01), Davies et al.
patent: 3665194 (1972-05-01), Alter et al.
patent: 3922555 (1975-11-01), Chapuis et al.
patent: 4066891 (1978-01-01), Gray
patent: 4081675 (1978-03-01), Bartz
Frank et al., "A Diffusion Chamber Radon Dosimeter for Use in Mine Environment", Nuc. Instr. and Meth., vol. 109, No. 3, 6-15-73, pp. 537-539.
Frisch, The Nuclear Handbook", Georges Newnes Ltd., London, pp. 4-14, 4-15, 1955.
Takemi et al., "Solid State Track Detector for Several Alpha Emitters of RdTh Daughter Nuclides", Technol. Rep. Osaka Univ., (Japan), vol. 23, No. 1154, Oct. 1973, pp. 727-734.

Affiliated with

Also associated with

Rating

Field method for detecting deposits containing uranium and thori does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Field method for detecting deposits containing uranium and thori, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Field method for detecting deposits containing uranium and thori will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-654629