Enhanced lifetime measurement of low-lying states in 66Ge and 68Ge

ORAL

Abstract

Lifetimes in the Z=N+2 nucleus $^{66}$Ge and its neighbor $^{68}$Ge have been measured after a fusion evaporation reaction at the Wright Nuclear Structure Laboratory at Yale University, using the New Yale Plunger Device in the SPEEDY array. $^{66}$Ge was produced through the reaction $^{58}$Ni($^{10}$B,2np)$^{66}$Ge at E$_{10B}$=28 MeV, and $^{68}$Ge through $^{58}$Ni(12C, 2p)$^{68}$Ge at E$_{12C}$=38 MeV. Techniques used include gamma-gamma-coincidences and the recoil distance method. By comparing both nuclei, the evolution along the neutron-axis away from N=Z will be discussed.

*This work was supported by US DOE grant no. DE-FG02-91ER-40609

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Authors

  • Robert Luettke

    • Yale University/TU Darmstadt
    • Yale University / TU Darmstadt

  • Elizabeth Ricard-McCutchan

    • Yale University

  • Volker Werner

    • Wright Nuclear Structure Laboratory, Yale University
    • Yale University

  • Ho-Chiang Ai

    • Yale University

  • Robert Casperson

    • Yale University
    • Wright Nuclear Structure Lab, Yale University

  • Richard Casten

    • Yale University

  • Andreas Heinz

    • Yale University
    • Wright Nuclear Structure Lab, Yale University

  • Jing Qian

    • Yale University
    • Wright Nuclear Structure Laboratory, Yale University
    • Wright Nuclear Structure Lab, Yale University

  • Babak Shoraka

    • Yale University / University of Surrey

  • Russ Terry

    • Yale University
    • Wright Nuclear Structure Lab, Yale University

  • Elizabeth Williams

    • Yale University
    • WNSL, Yale University, New Haven, CT 06520

  • Ryan Winkler

    • Yale University
    • Wright Nuclear Structure Lab, Yale University