By neutron bombardments of samples of Ni enriched in isotopes 61, 62, and 64, respectively, the following radioactivities have been identified: , 1.3 Mev, no , half-life 1.75 hours, , 2.3 Mev, 1.3 Mev, half-life 13.9 min.
Evidence is also presented for a 1.6-minute - and -activity associated with , and for a 4- to 5-minute activity possibly of .
- Received 28 October 1948
- Published in the issue dated February 1949
© 1949 The American Physical Society