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  • 21.60.Fw  (5)
  • PACS:27.60.+j 90 ≤ A ≤ 149 – 21.10.Tg Lifetimes – 23.20.Lv Gamma transitions and level energies  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Beta Decay of 111Tc to 111Ru (1998)
    Springer
    The European physical journal 2 (1998), S. 17-19 
    Details
    ISSN: 1434-601X
    Keywords: PACS:27.60.+j 90 ≤ A ≤ 149 – 21.10.Tg Lifetimes – 23.20.Lv Gamma transitions and level energies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The β-decay of the very neutron-rich 111Tc nucleus has been observed. A partial decay scheme of 111Ru is presented, complementing the high-spin levels earlier reported in spontaneous fission work.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500050085
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  • 2
    Electronic Resource
    Electronic Resource
    Shape coexistence near the double-midshell nucleus 111Rh (1998)
    Springer
    The European physical journal 1 (1998), S. 285-297 
    Details
    ISSN: 1434-601X
    Keywords: PACS:27.60.+j 90 ≤ A ≤ 149 – 21.10.Tg Lifetimes – 23.20.Lv Gamma transitions and level energies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The decay of 111Ru obtained from fast on-line chemical and mass separation has been investigated by β-γ-t and γ-γ coincidence techniques. Earlier spin and parity assignments of 111Rh levels based on extrapolations of level systematics are confirmed. In particular, the K=1/2 intruder band is supported by the hindrance of E2 transitions between deformed and spherical states and enhancement of intraband E2 transitions. The excitation energies of intruder band members in Rh isotopes show a minimum at 109Rh64, with two neutrons less than 111Rh at the N=66 midshell. This trend, which differs from the one in the higher-Z neighbouring elements Ag and Cd with minima at N=66, follows the evolution of deformation observed in the lower-Z elements Ru and Mo.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500050063
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  • 3
    Electronic Resource
    Electronic Resource
    Proton-neutron multiplets in96Y (1988)
    Springer
    The European physical journal 329 (1988), S. 301-305 
    Details
    ISSN: 1434-601X
    Keywords: 21.60.Fw ; 23.20.Ck ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The structure of the nucleus 39 96 Y57 is discussed in the framework of the parabolic rule for the splitting of members of proton-neutron coupled configurations and of the interacting boson-fermion-fermion model (IBFFM). A good description of the available experimental data including the existence of theβ − decaying 8+ isomer with a half-life of 10 s has been obtained which demonstrates the influence of the subshell closures in the neighbourhood of 40 96 Zr56.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01290235
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  • 4
    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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  • 5
    Electronic Resource
    Electronic Resource
    Nuclear structure of97Y in the interacting boson-fermion model (1988)
    Springer
    The European physical journal 330 (1988), S. 365-369 
    Details
    ISSN: 1434-601X
    Keywords: 21.60.Fw ; 23.20.Lv ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Unique-parity states of97Y are studied in the framework of the interacting boson-fermion model (IBFM). Spin assignments for the levels of the unique-parity yrast band are proposed on the basis of nuclear systematics and the IBFM band pattern associated with coupling of a particle-type quasiparticle (g9/2) to the SU(5) core38 96Sr58. The good fit of the experimental data with the IBFM calculations confirms the single particle character of this immediate neighbour of the doubly sub-magic nucleus96Zr.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01290121
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  • 6
    Electronic Resource
    Electronic Resource
    Structure of low-lying levels in91Rb and93Rb (1986)
    Springer
    The European physical journal 325 (1986), S. 139-147 
    Details
    ISSN: 1434-601X
    Keywords: 23.20.Ck ; 21.60.Fw ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Life-times of low-lying levels in 37 91 Rb54 and 37 93 Rb56 have been determined fromβ −−γ coincidence measurements at the fission-product separator JOSEF. Values oft 1/2=17.0(8) ns and 2.0(2) ns have been obtained for the levels at 1,134 keV in91Rb and 267 keV in93Rb, respectively, and upper limits could be deduced for several other states. Calculations in the frame of IBFM/PTQM have been performed for91Rb, the results of which allow an interpretation of the low-lying levels of this nucleus. For the 1,134 keV level the configuration [πg 9/2⊗2+] 7/2+ is suggested which lies close to or even below the 9/2 1 + level. The calculated half-life of 14 ns for the 1,134 keV level reproduces well the experimental value. The half-life of the 267 keV level in93Rb favours the assignment ofI π=1/2− to this state over the alternative 3/2−.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01289644
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  • 7
    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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