| Abstract: | The half-life of Th232 has been calculated by determining an absolute gamma-disintegration rate for Tl208 in equilibrium with Th232 for three old thorium nitrate salts and one natural thorite sample. The branching ratio, ??(??+??), for Bi212, a necessary parameter in the calculation, was also measured. The half-life of Th232 was found to be 1.42??1010 years within an estimated error of 5%, which is essentially in agreement with the presently accepted value. The branching ratio, ??(??+??), of Bi212 was found to be 0.362??0.006, about 7.4% higher than the currently accepted value. ?? 1956 The American Physical Society. |
| Genre: | Article |
| ProdID: | 70010475 |
| Citation Author: | Senftle, F. E.; Farley, T. A.; Lazar, N. |
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| Citation End Page: | 1632 |
| Citation Issue: | 6 |
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| Citation Language: | English |
| Citation Larger Work Title: | Physical Review |
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| Citation Number Of Pages: | 4 |
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| Citation Search Results Text: | Half-life of Th232 and the branching ratio of Bi212; 1956; Article; Journal; Physical Review; Senftle, F. E.; Farley, T. A.; Lazar, N. |
| Citation Start Page: | 1629 |
| Citation Volume: | 104 |
| Citation Year: | 1956 |
| Type: | citation/reference |
| Text: | Half-life of Th232 and the branching ratio of Bi212; 1956; Article; Journal; Physical Review; Senftle, F. E.; Farley, T. A.; Lazar, N. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1103/PhysRev.104.1629 |
| Date Other: | Sun, 1 Jan 1956 00:00 -0600 |
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