ABUNDANCE OF U-236 IN NATURE

Journal Article · Fri Jun 01 00:00:00 EDT 1962 · Geochim. et Cosmochim. Acta

DOI:https://doi.org/10.1016/0016-7037(62)90046-7· OSTI ID:4804892

Davis, W D; Mewherter, J L

Upper limits of less than one part per billion were established by mass spectrometry for U-233, U-236, and U-237 isotopes in uranium from samples of Belgian Congo pitchblende and Colorado carnotite. The new upper limit of one- half part per billion U-236 in the pitchblende is smaller than would be expected from the measured Pu-239: U-238 ratio of 2.8 x 10/sup -12/ in the ore, assuming the Pu-239 was formed exclusively by capture of thermal neutrons; and much smaller than would be expected from previous plutonium assays of Belgian Congo pitchblende samples. (auth)

• Research Organization: Knolls Atomic Power Lab., Schenectady, N.Y.
• NSA Number: NSA-16-027446
• OSTI ID: 4804892
• Journal Information: Geochim. et Cosmochim. Acta, Journal Name: Geochim. et Cosmochim. Acta Vol. Vol: 26
• Country of Publication: United States
• Language: English

Related Subjects

CARNOTITE
DISTRIBUTION
GEOLOGY, MINERALOGY, AND METEOROLOGY
MASS SPECTROMETERS
PITCHBLENDE
PLUTONIUM 239
POTASSIUM COMPOUNDS
QUANTITATIVE ANALYSIS
QUANTITY RATIO
URANATES
URANINITES
URANIUM 233
URANIUM 236
URANIUM 237
URANIUM 238
URANIUM MINERALS
URANIUM OXIDES