Abstract
has been produced via the reaction using 42-46-MeV ions, and by the reaction using 3.4-MeV tritons. Identification is made from the observed -delayed ray of 1572.41 ± 0.25 keV. By means of the reaction, the ray from the first excited state of has been measured as 1572.24 ± 0.15 keV, in disagreement with previous measurements. The average of the half-lives for as measured by the first two reactions is 48.1 ± 1.4 sec. Upper limits were obtained for -ray transitions to other excited states in . No information was obtained on a possible transition to the ground state. The -ray spectrum measured in coincidence with the 1572-keV ray has an end point of 2337 ± 75 keV, establishing a mass excess of -24 936 ± 75 keV for . These results are consistent with the expected mass and spin-parity () of the ground state. Comparison of these results with shell-model calculations is presented.
- Received 20 April 1972
DOI:https://doi.org/10.1103/PhysRevC.6.820
©1972 American Physical Society