THE NATURAL ABUNDANCES OF THE URANIUM ISOTOPES
Using a surface-ionization mass spectrometer, the natural U 238 /U 235 abundance ratio in uranium obtained from Great Bear Lake Pitchblende has been measured to be 137.80 ± 0.14. From a survey of results reported in the literature on U 234 a best value of 17,325 ± 550 was estimated for the natural U...
| Published in: | Canadian Journal of Chemistry |
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| Main Author: | |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Canadian Science Publishing
1956
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1139/v56-039 http://www.nrcresearchpress.com/doi/pdf/10.1139/v56-039 |
| Summary: | Using a surface-ionization mass spectrometer, the natural U 238 /U 235 abundance ratio in uranium obtained from Great Bear Lake Pitchblende has been measured to be 137.80 ± 0.14. From a survey of results reported in the literature on U 234 a best value of 17,325 ± 550 was estimated for the natural U 238 /U 234 abundance ratio. The corresponding isotopic abundances are 0.7204 ± 0.0007 atom % and 0.00573 ± 0.00018 atom % for U 235 and U 234 , respectively. |
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