Precision branching ratio measurement for the superallowed beta+ emitter 62Ga and isospin-symmetry-breaking corrections in A>or=62 nuclei. Academic Article uri icon

abstract

  • A high-precision branching ratio measurement for the superallowed beta+ decay of 62Ga was performed at the Isotope Separator and Accelerator radioactive ion beam facility. Nineteen gamma rays emitted following beta+ decay of 62Ga were identified, establishing the dominant superallowed branching ratio to be (99.861+/-0.011)%. Combined with recent half-life and Q-value measurements, this branching ratio yields a superallowed ft value of 3075.6+/-1.4 s for 62Ga decay. These results demonstrate the feasibility of high-precision superallowed branching ratio measurements in the A>or=62 mass region and provide the first stringent tests of the large isospin-symmetry-breaking effects predicted for these decays.

published proceedings

  • Phys Rev Lett

author list (cited authors)

  • Hyland, B., Svensson, C. E., Ball, G. C., Leslie, J. R., Achtzehn, T., Albers, D., ... Zganjar, E. F.

citation count

  • 42

complete list of authors

  • Hyland, B||Svensson, CE||Ball, GC||Leslie, JR||Achtzehn, T||Albers, D||Andreoiu, C||Bricault, P||Churchman, R||Cross, D||Dombsky, M||Finlay, P||Garrett, PE||Geppert, C||Grinyer, GF||Hackman, G||Hanemaayer, V||Lassen, J||Lavoie, JP||Melconian, D||Morton, AC||Pearson, CJ||Pearson, MR||Phillips, AA||Schumaker, MA||Smith, MB||Towner, IS||Valiente-Dob√≥n, JJ||Wendt, K||Zganjar, EF

publication date

  • September 2006