Abstract
The unreported heavy neutron-rich nuclide has been produced by ion bombardment of natural uranium. Thorium was radiochemically separated from the uranium and reaction products. The growth and decay of rays has been observed, identifying the parent as The half-life of has been determined to be At the same time, a new ray of was found in the spectrum gated with x rays of Pa and tentatively assigned to decay.
- Received 12 August 1998
DOI:https://doi.org/10.1103/PhysRevC.59.520
©1999 American Physical Society