Exclusion of alpha particles from thoron in uranium detection

Details Exclusion of alpha particles from thoron in uranium detection Exclusion of alpha particles from thoron in uranium detection

1978-01-12

1980-01-29

Smith, Alfred E.

Radiant energy

Geological testing or irradiation

55 16, 250472, G01V 500, B01D 5910

Patent

active

041863038

ABSTRACT:
Alpha particles emitted from radon 220, a daughter product formed from the decay of thorium, are prevented from reaching an alpha particle detector by enclosing the detector in a volume into which alpha-emitting radioactive gases can only enter through a semipermeable membrane at least about 10 mg/cm.sup.2 in thickness. The enclosed volume must be between 30 and 2000 cm.sup.3 and the (AP)/(VL) ratio must be between 10.sup.-7 and 10.sup.-5. Also, the detector must be positioned so as to expose it to gas from the membrane for a distance of at least 2 cm through a solid angle of at least one steradian.

REFERENCES:
patent: 3968371 (1976-07-01), Greendale
patent: 4053772 (1977-10-01), Felice
patent: 4064436 (1977-12-01), Ward

Affiliated with

Also associated with

Rating

Exclusion of alpha particles from thoron in uranium detection does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Exclusion of alpha particles from thoron in uranium detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exclusion of alpha particles from thoron in uranium detection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-882685