Abstract
A 5-mm-thick lithium-drifted germanium counter was used to detect the low-energy gamma rays ( MeV) emitted at 90° to the beam following bombardment of an gas target with ions with a mean energy of 1.8 MeV. The excitation energies of the first seven levels of were determined to ±2 keV or better from energy measurements of the de-excitation gamma rays from these levels. The decay of the 2.10-MeV level to the 0.94- and 1.08-MeV levels was confirmed, and an upper limit of 6% was placed on the branch to the 1.045-MeV level.
- Received 4 November 1964
DOI:https://doi.org/10.1103/PhysRev.137.B1445
©1965 American Physical Society