Статья

Prompt Proton Decay of a Well-Deformed Rotational Band in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow/><mml:mrow><mml:mn>58</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi>Cu</mml:mi></mml:math>

D. RudolphPhysics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831C. BaktashPhysics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831J. DobaczewskiDepartment of Physics, University of Tennessee, Knoxville, Tennessee 37996W. NazarewiczDepartment of Physics, University of Tennessee, Knoxville, Tennessee 37996W. SatułaDepartment of Physics, University of Tennessee, Knoxville, Tennessee 37996M. J. BrinkmanPhysics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831M. DevlinChemistry Department, Washington University, St. Louis, Missouri 63130H.-Q. JinDepartment of Physics, University of Tennessee, Knoxville, Tennessee 37996D. R. LaFosseChemistry Department, Washington University, St. Louis, Missouri 63130L. L. RiedingerDepartment of Physics, University of Tennessee, Knoxville, Tennessee 37996D. G. SarantitesChemistry Department, Washington University, St. Louis, Missouri 63130C.-H. YuPhysics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831

1998lv

ABI

Аннотация

An excited well-deformed rotational band has been observed in the $N\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}Z$ odd-odd nucleus ${}^{58}\mathrm{Cu}$. The first excited state in this band decays via $\ensuremath{\gamma}$ emission to the spherical states associated with the first minimum in the potential, thus providing for its unambiguous assignment to ${}^{58}\mathrm{Cu}$. In contrast, its bandhead decays via emission of a prompt 2.4(1) MeV proton to an excited state in the daughter nucleus ${}^{57}\mathrm{Ni}$. This is the first observation of proton decay from states associated with a deformed secondary minimum in the potential. Self-consistent Hartree-Fock calculations reproduce well both the large collectivity of this band and the general trend of its moment of inertia.

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Идентификаторы

DOI: 10.1103/physrevlett.80.3018

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Цитирований: 5Использованных источников: 0

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