Abstract
In bombardment of with , we observed a decay sequence consisting of an implanted heavy atom, three subsequent decays, and a spontaneous fission (SF), all correlated in time and position. The measured energies and corresponding time intervals were MeV ( s), 8.67 MeV ( min), and 8.83 MeV ( min); for the SF ( min), the total deposited energy was approximately 190 MeV. The -particle energies together with the decay times and SF terminating the chain offer evidence of the decay of nuclei with high atomic numbers. This decay chain is a good candidate for originating from the decay of the parent nucleus , produced with a cross section of about 1 pb.
- Received 8 March 1999
DOI:https://doi.org/10.1103/PhysRevLett.83.3154
©1999 American Physical Society