Abstract
We produced the lowest state in with the () reaction and measured the energies of the deexcitation γ rays, obtaining an excitation energy of keV that disagrees with a previous value of keV. Our result, together with a recent measurement of the mass, makes the multiplet the most precisely measured quintet and provides easily the most stringent test of the isobaric multiplet mass equation. A significant violation of the isobaric multiplet mass equation is observed that could be explained by mixing with a nearby level.
5 More- Received 11 January 2006
DOI:https://doi.org/10.1103/PhysRevC.73.054313
©2006 American Physical Society