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  • Electronic Resource  (4)
  • 1985-1989  (4)
  • 1989  (4)
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  • Electronic Resource  (4)
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  • 1985-1989  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    Lifetime measurements in99Sr and100Zr (1989)
    Springer
    The European physical journal 332 (1989), S. 243-244 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The lifetime of the first excited state in99Sr has been determined by the delayed γ-γ coincidence method. The value of t/2=0.58(9) ns corresponds to a deformation parameter ß=0.38(4). The deduced 〈sz〉 value confirms the previously proposed ν[411]3/2 Nilsson assignment for the99Sr ground state. In addition, lifetime values for the 2+ (t1/2=0.40(8) ns) and 0+ (t1/2=5.36(23) ns) states in100Zr are obtained, which deviate from older measurements and indicate a larger deformation of ß=0.39(4).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01289787
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Nature of93Rb levels studied in IBFM (1989)
    Springer
    The European physical journal 333 (1989), S. 1-4 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Pc ; 21.60.Fw ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The structure of the low-lying states with negative parity of 37 93 Rb56 has been studied in the framework of the Interacting Boson-Fermion Model (IBFM) using the even-even neighbour 38 94 Sr56 as a core. A good description of the properties of the levels has been obtained. A sensitive test of the quality of the theoretical studies is the decay pattern of the second excited state at 267 keV with a half-life of 2.0(2) ns. The calculations givet 1/2=2.26 ns and they predict the existence of a 13 keV transition into the first excited state, the existence of which has been confirmed afterwards by experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01290103
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Structure of the neutron-rich nucleus 37 94 rb57 (1989)
    Springer
    The European physical journal 334 (1989), S. 259-267 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Pc ; 21.60.Fw ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A level scheme has been established for 37 94 Rb57 based on studies at the fission-product separator JOSEF ofγγ coincidences following theβ- decay of94Kr. For the 190.7 keV level a half-life of 2.5(8) ns has been determined through the centroid-shift method. The majorβ-decay branch of94Kr proceeds with log ft=3.7 into the 988.4 keV state in94Rb. This transition must be of the 0+→1+ GT type involving the transitionνg7/2→πg9/2. IBFFM calculations have been performed for94Rb, starting from the parametrization used in the previous IBM investigations for the isotope93Rb and the isotone96Y. A theoretical interpretation of the low-lying levels including propositions for the spins is given in a comparison to the available data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01284553
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    IBFFM predictions for low-lying spherical states in the shape-coexisting odd-odd nucleus98Y (1989)
    Springer
    The European physical journal 334 (1989), S. 517-518 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Extrapolating the Interacting Boson-Model treatment from lighter neighbours to98Y we predict the properties of low-lying states of spherical nature in IBFFM. This odd-odd nucleus which presents one of the rare cases of coexisting spherical and deformed shapes is of fundamental importance for understanding nuclear phase transitions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294761
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    Paper (German National Licenses)
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