High-spin structure of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Eu</mml:mi></mml:mrow><mml:mprescripts/><mml:mrow/><mml:mrow><mml:mn>139</mml:mn></mml:mrow><mml:mrow/><mml:mrow/></mml:mmultiscripts></mml:mrow></mml:math>
P. VaskaDepartment of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794C. W. BeausangDepartment of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794D. B. FossanDepartment of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794J. R. HughesDepartment of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794R. MaDepartment of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794E. S. PaulDepartment of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794R J PoynterDepartment of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794P. H. ReganDepartment of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794R. WadsworthDepartment of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794S. A. ForbesDepartment of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794S. M. MullinsDepartment of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794P. J. NolanDepartment of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794
1995lv
ABI
Abstract
The $_{\mathrm{}63}^{139}\mathrm{Eu}_{76}$ nucleus has been investigated by \ensuremath{\gamma}-\ensuremath{\gamma} coincidence measurements employing the $^{92}\mathrm{Mo}$${(}^{50}$Cr,3p) reaction at 220 MeV with both backed and thin self-supporting targets. The high-spin properties have been followed up to a spin of 47/2. The \ensuremath{\pi}${\mathit{h}}_{11/2}$ yrast band and its unfavored signature partner both exhibit backbends due to ${\mathit{h}}_{11/2}$ proton alignment. The two signatures of a \ensuremath{\pi}${\mathit{g}}_{7/2}$(${\mathit{d}}_{5/2}$) band above the ${\mathit{h}}_{11/2}$ proton alignment were also identified. Interpretations of other structures are discussed.
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Cited by 20 references