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  • 1
    Digitale Medien
    Digitale Medien
    Magnetic moments of the 2 1 + states in102, 104Mo (1985)
    Springer
    The European physical journal 321 (1985), S. 593-598 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 25.85.Ec ; 21.10.Ky ; 27.60.+j
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Theg factors of the first excited 2+ levels in the neutron-rich nuclei102Mo and104Mo have been studied through the measurement of the perturbed angular correlations for theγ-γ cascades between the 0 2 + -2 1 + -0 1 + level sequences. The results of g=0.42±0.07 for102Mo and ofg= −0.11 +0.12 for104Mo agree with the prediction of the vibrational-rotational model. In terms of IBA, with the assumption ofN π=3 for the Mo isotopes which takes into consideration a two particle, two-hole excitation across the Z=40 subshell, the proton-bosong factor is deduced to beg π=1.00±0.23. It is shown that this value provides evidence for subshell effects in100Zr.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01432435
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  • 2
    Digitale Medien
    Digitale Medien
    The decay scheme of the 3-s Isomer of100Nb and the properties of levels in100Mo (1987)
    Springer
    The European physical journal 327 (1987), S. 119-126 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 25.85.Ec ; 23.20.En ; 23.20.Gq ; 23.20.Lv ; 27.60.+j
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Theβ − decay of the longer-lived isomer in100Nb has been studied at the fission-product separator JOSEF. Measurements ofγ-ray singles spectra, ofγ-γ coincidences and ofγ-γ angular correlations have been performed. A value oft 1/2=2.99(11)s has been determined for the isomer which probably hasI π=4+ or 5+. A scheme of the levels of100Mo which are populated in the decay of this isomer has been established. Information on the spins of several states of100Mo has been obtained. Thus,I=0 levels have been identified at 1,505, 2,038 and 2,087 keV. The mixing ratios have been determined for the 22 +→21 + and 23 +→21 + transitions. The results provide evidence for a vibrational structure of100Mo with separate bands based on the ground state and on the first excited 0+ level.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01295258
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  • 3
    Digitale Medien
    Digitale Medien
    Saturation of deformation atN=60 in the Sr isotopes (1990)
    Springer
    The European physical journal 337 (1990), S. 143-148 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 23.20.CK ; 27.60.+j
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01294285
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  • 4
    Digitale Medien
    Digitale Medien
    A new high-spin isomer in 39 97 Y58 (1986)
    Springer
    The European physical journal 323 (1986), S. 59-67 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 25.85.Ec ; 23.20.Lv ; 27.60.+j
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract An isomeric state at 3,523 keV excitation energy in97Y with a half-life of 144(10) ms has been discovered with the fission-product separator JOSEF. This isomer is depopulated through aγ transition of 162 keV. AnE3 multipolarity for this transition is consistent with the measured conversion coefficients ofα K =0.98(20) andα T =1.00(19). Subsequent electromagnetic transitions populate several new97Y levels which have high spins. For the isomer the three-quasiparticle configuration [πg 9/2⊗ν(h 11/2,g 7/2)]27/2− is proposed. TheE3 transition with a strength about 2 single-particle units is supposed to be of the typeh 11 2/+1 →d 5 2/−1 . These findings provide evidence for the rapid shape transition atA≃100 since they indicate shell-model character of 39 97 Y58 even at high excitation energies while the immediate neighbour 39 98 Y59 contains a rotational band based on a level at 495 keV.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01294555
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