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  • 1
    Electronic Resource
    Electronic Resource
    Excited states of 154Tm (2002)
    Springer
    The European physical journal 14 (2002), S. 7-11 
    Details
    ISSN: 1434-601X
    Keywords: PACS. 21.10.Pc Single-particle levels and strength functions – 23.20.Lv Gamma transitions and level energies – 27.70.+q 150 ?A? 189
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: A high-spin level structure of the nucleus 154Tm has been established for the first time up to 6.14 MeV. The 118Sn + 40Ca reaction at 205 MeV associated with the recoil shadow method was used to identify the I π = (19)+ isomeric state at 2.74 MeV. In-beam γ-ray and conversion electron spectroscopy have been applied on the 144Sm(14N, 4n)154Tm reaction at 95 MeV to build the level scheme. The level structure of 154Tm is compared to other structures observed in N = 85 neighbouring nuclei.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epja/iepja1363
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    New investigation of the decay of the high-spin isomer in 151Er (2000)
    Springer
    The European physical journal 8 (2000), S. 451-454 
    Details
    ISSN: 1434-601X
    Keywords: PACS. 21.10.Pc Single-particle levels – 23.20.Lv Gamma transitions and level energies – 23.20.Nx Internal conversion and extranuclear effects – 27.70.+q 150?A?189
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The decay of the T 1/2 = 420 ns isomer in 151Er has been reinvestigated. The multipolarities of the decaying transitions have been established by measuring the electron conversion coefficients. An I = 67/2- assignment is proposed for this isomer with a π[h 4 11/2 d 1 3/2 d -1 5/2] ⊗ν[f 7/2 h 9/2 h -1 11/2] configuration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530050055
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  • 3
    Electronic Resource
    Electronic Resource
    New high-spin microsecond isomers in 131Sb (2000)
    Springer
    The European physical journal 9 (2000), S. 191-195 
    Details
    ISSN: 1434-601X
    Keywords: PACS. 23.20.Lv Gamma transition level energies – 25.85.Ec Neutron-induced fission – 21.60.Cs Shell model – 27.60.+j 90≤A≤149
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: In this work we have identified and studied the decay of two new microsecond isomers 19/2- and 23/2+ in 131Sb. This neutron-rich nucleus was produced by thermal neutron-induced fission of 241Pu. The detection is based on time correlation between fission fragments selected by the LOHENGRIN spectrometer at ILL (Grenoble) and the γ-rays or conversion electrons from isomers. These new data on high-spin states complete the level scheme previously obtained from β-decay. A large fraction of the members of the πg 7/2ν(h 11/2 -1 d 3/2 -1) and πg 7/2νh 11/2 -2 multiplets are now known and were compared with a multi-particle shell model calculation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500070036
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  • 4
    Electronic Resource
    Electronic Resource
    New insight in the level structure of 153Er (2000)
    Springer
    The European physical journal 7 (2000), S. 149-153 
    Details
    ISSN: 1434-601X
    Keywords: PACS: 21.10.Pc Single-particle levels – 23.20.Lv Gamma transitions and level energies – 27.70.+q 150 ≤ A ≤ 189
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The high-spin level structure of the 153Er nucleus has been reinvestigated by in-beam γ-ray and electron spectroscopy with (14N,pxn) reaction. Excitation energies, spin and parity assignments are unambiguously established for the two lowest isomers T 1/2≃ 380 ns and T1/2\simeq 10 ns. The characteristics of the third one (T 1/2≃ 250 ns) at 5.2 MeV are still questionable but its main decay modes are better known. An extension of the level scheme is proposed up to 8.4 MeV.Experimental results have been discussed in terms of shell model multiplets and compared with the other structures observed in N=85 neighbouring nuclei.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00013591
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  • 5
    Electronic Resource
    Electronic Resource
    On the nature of the 17 μs isomer of the 133Sb valence nucleus (2000)
    Springer
    The European physical journal 7 (2000), S. 463-465 
    Details
    ISSN: 1434-601X
    Keywords: PACS:21.10.Tg Lifetimes – 23.20.Lv Gamma transition level energies – 25.85.Ec Neutron-induced fission – 21.60.Cs Shell model – 27.60.+j 90 ≤ A ≤ 149
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The decay of the 17 μs isomer of 133Sb was re-investigated experimentally. It was produced by thermal neutron induced fission of 241Pu. Its detection is based on time correlation between fission fragments selected by the LOHENGRIN spectrometer at ILL (Grenoble), and the γ-rays, and conversion electrons from the isomer. The interpretation of the level scheme is based on shell model calculations, where empirical two-body matrix elements were employed. The good agreement between theory and experiment suggests that the isomer is the 21/2+ member of the 2p-1h πg 7/2ν(f 7/2 h 11/2 −1) configuration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00013643
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