Abstract
New measurements of the mass excess of the lowest levels in and give values of 25.7406±0.0017 and 27.0711±0.0023 MeV, respectively, and indicate a definite cubic dependence for the masses of the quartet which includes and in their ground states. A value of 7.6±1.7 keV is obtained for the coefficient of the term which now clearly exceeds the current theoretical estimates. Precise values of excitation energy of levels in and have been obtained as part of these measurements.
[NUCLEAR REACTIONS , (), MeV; measured of levels of and . MeV; measured of levels; deduced coefficient of multiplet mass equation for .]
- Received 13 February 1974
DOI:https://doi.org/10.1103/PhysRevC.9.2102
©1974 American Physical Society