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  • 21.10.Pc  (2)
  • PACS:27.60.+j 90 ≤ A ≤ 149 – 23.20.Lv Gamma transitions and level energies  (2)
  • 21.60.Ev  (1)
  • 23.20.CK  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Structure of theN=59 nucleus97Sr: coexistence of spherical and deformed states (1990)
    Springer
    The European physical journal 337 (1990), S. 149-159 
    Details
    ISSN: 1434-601X
    Keywords: 23.20.Lv ; 21.60.Ev ; 23.20.−g
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A band with a rotational pattern based on a state at 585.1 keV has been identified in theN=59 neutron-rich nucleus97Sr. Its properties lead to the [422] 3/2 Nilsson-orbital assignment for the band head. There is evidence for a second band with the head at 644.7 keV and the configuration [541] 3/2. Since the ground state and the lowest excited levels are spherical, shape coexistence is established for97Sr. A deformed nature of several levels at 500–600 keV results also from QRPA-model calculations. The structure of the low-lying spherical levels has been studied in the frame of the IBF model. The results of the present investigations lead to a better understanding of theN=59 isotones which constitute the link between the spherical and deformed nuclei atA∼100 as a species with shape coexistence but without any indications of particular softness.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294286
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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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  • 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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  • 4
    Electronic Resource
    Electronic Resource
    Saturation of deformation atN=60 in the Sr isotopes (1990)
    Springer
    The European physical journal 337 (1990), S. 143-148 
    Details
    ISSN: 1434-601X
    Keywords: 23.20.CK ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract From the halflife oft 1/2=3.91 (16) ns for the 21 + state in100Sr a deformation parameter ofβ=0.40(1) has been derived. Within the given uncertainties, this value is equal to the recently determinedβ-parameters for98Sr and99Sr, indicating that in the Sr isotopes saturation of deformation is reached immediately at its onset well before neutron midshell. This behaviour is reflected by the “twin” character of98Sr and100Sr with identical features of their unperturbed ground-state rotational bands. These observations are discussed in terms of strong two-nucleon interactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294285
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  • 5
    Electronic Resource
    Electronic Resource
    Intruder states in even-even neutron-rich Pd isotopes (1998)
    Springer
    The European physical journal 2 (1998), S. 25-27 
    Details
    ISSN: 1434-601X
    Keywords: PACS:27.60.+j 90 ≤ A ≤ 149 – 23.20.Lv Gamma transitions and level energies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The decays of 112Rh g and 112Rh m obtained as on-line mass separated fission products have been investigated by standard β and γ spectroscopic techniques and γ-γ angular correlations. Low-lying 0+ and 2+ states are identified in the daughter nucleus 112Pd. Systematics suggests the existence of an intruder band which is the lowest in 110Pd, i.e. two neutrons before the midshell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500050087
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  • 6
    Electronic Resource
    Electronic Resource
    First decay scheme of 113Tc and identification of 113Ru m (1998)
    Springer
    The European physical journal 2 (1998), S. 241-243 
    Details
    ISSN: 1434-601X
    Keywords: PACS:27.60.+j 90 ≤ A ≤ 149 – 23.20.Lv Gamma transitions and level energies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Very neutron–rich fission products of the mass chain A=113 obtained from the IGISOL on–line mass separator have been investigated by γγ coincidence techniques and γ-spectra multiscaling. Gamma–rays following β–decay of 113Tc have been observed for the first time and a new 0.5 s isomeric state has been found in 113Ru.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500050114
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