Possible Existence of Cm247 or Its Daughters in Nature
Abstract
The absence of any detectable Pu243 daughter activity in a sample of curium containing two micrograms of Cm247 indicates that the alpha half-life of Cm247 exceeds 4×107 years and probably exceeds 9×107 years. The possibilities of finding Cm247 in nature and of finding high U235: U238 ratios in very old rare-earth minerals are discussed.
- Publication:
-
Physical Review
- Pub Date:
- January 1957
- DOI:
- 10.1103/PhysRev.105.679
- Bibcode:
- 1957PhRv..105..679D