New Isotope Einsteinium-248
Abstract
The new isotope E248 has been identified among the products of the deuteron bombardment of Cf249. It decays principally by electron capture with a half-life of 25+/-5 minutes and also by the emission of (6.87+/-0.02)-Mev alpha particles. A branching ratio (E.C.α) of ~400 was determined from the amount of Cf248 formed by electron-capture decay of the new isotope. Partial excitation functions supporting the assignment to mass number 248 are presented.
- Publication:
-
Physical Review
- Pub Date:
- December 1956
- DOI:
- 10.1103/PhysRev.104.1314
- Bibcode:
- 1956PhRv..104.1314C