• A New Measurement of the Partial 0+->0+ Half Life of 10C with GAMMASPHERE
    with B. K. Fujikawa, S. J. Asztalos, M. -A. Deleplanque-Stephens, P. Fallon, S. J. Freedman, Lee I. -Y., L. J. Lising, A. O. Macchiavelli, R. W. MacLeod, J. C. Reich, M. A. Rowe, S. -Q. Shang, F. S. Stephens, E. G. Wasserman, and J. P. Greene
    We report on a new measurement of the strength of the superallowed 0+->0+ transition in the beta-decay of 10C: 10C->10B+e+nu. The experiment was done at the LBNL 88-inch cyclotron using forty seven GAMMASPHERE germanium detectors. Precise knowledge of this branching ratio is necessary to compute the superallowed Fermi ft, which gives the weak vector coupling constant and the u to d element of the Cabibbo-Kobayashi- Maskawa quark mixing matrix.
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    Rotational bands in the semi-magic nucleus Ni-57(28)29
    with D. Rudolph, I. Ragnarsson, W. Reviol, C. Andreoiu, M. A. Bentley, M. P. Carpenter, R. J. Charity, M. Cromaz, J. Ekman, C. Fahlander, P. Fallon, E. Ideguchi, A. O. Macchiavelli, M. N. Mineva, D. G. Sarantites, D. Seweryniak, and S. J. Williams
    Two rotational bands have been identified and characterized in the proton-magic N = Z + 1 nucleus Ni-57. These bands complete the systematics of well-and superdeformed rotational bands in the light nickel isotopes starting from doubly magic Ni-56 to Ni-60. High-spin states in Ni-57 have been produced in the fusion-evaporation reaction Si-28(S-32, 2p1n)Ni-57 and studied with the gamma-ray detection array GAMMASPHERE operated in conjunction with detectors for evaporated light charged particles and…Read more