Abstract
Targets made from the separated isotopes and were bombarded by 3.90-Mev deuterons, and protons from the nuclear reactions and were observed. The energy distribution of the protons emitted in each reaction was obtained by measuring the proton yield as a function of range. The ground state -value for was found to be 5.48±0.08 Mev, giving the mass difference - = 1.00070±0.00007 mass units. Excited states of were found at 0.81, 2.01, 2.56, 3.3, 3.7, 4.2, and 4.8 Mev. The ground state -value for was 5.12±0.10 Mev, giving the mass difference - = 1.00109±0.00010 mass units. Excited states of were found at 0.62, 1.18, 1.97, and 2.29 Mev.
- Received 25 November 1949
DOI:https://doi.org/10.1103/PhysRev.77.794
©1950 American Physical Society