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  • Electronic Resource  (16)
  • 1985-1989  (16)
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  • Electronic Resource  (16)
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  • 11
    Electronic Resource
    Electronic Resource
    The nilsson-potential parameters for neutrons at A≃-100 and new deformation values for103Mo and105Mo (1985)
    Springer
    The European physical journal 320 (1985), S. 393-398 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The half-lives of the first excited levels in odd-neutron nuclei103Mo and105Mo have been measured. From these data, values of the deformation parameter ofɛ=0.31±0.05 and 0.29±0.06 for103Mo and105Mo, respectively, have been deduced assuming prolate spheroidal shapes. The present results in combination with previously determined properties of the ground-state bands of these nuclei are used to determineμ, the magnitude of the coefficient of the 12 term, in the Nilsson Hamiltonian, for the new region of deformation atA∼-100.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01415715
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    Paper (German National Licenses)
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  • 12
    Electronic Resource
    Electronic Resource
    A new high-spin isomer in 39 97 Y58 (1986)
    Springer
    The European physical journal 323 (1986), S. 59-67 
    Details
    ISSN: 1434-601X
    Keywords: 25.85.Ec ; 23.20.Lv ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294555
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  • 13
    Electronic Resource
    Electronic Resource
    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
    Keywords: 25.85.Ec ; 23.20.En ; 23.20.Gq ; 23.20.Lv ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01295258
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  • 14
    Electronic Resource
    Electronic Resource
    The deformation of101Zr (1987)
    Springer
    The European physical journal 326 (1987), S. 233-234 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The life-time of the first excited member of the ground-state band in101Zr has been determined to 0.9(3) ns through the measurement of γ-γ-delayed coincidences with Ge detectors at the fission-product separator JOSEF. The result shows that this nucleus is strongly deformed with |ß|=0.32(6). This finding provides further important evidence for the fact that the odd-mass nuclei at A ~ 100 with more than 59 neutrons are good rotors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01283601
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  • 15
    Electronic Resource
    Electronic Resource
    The[g 9 2/2 ]8+ state in96Zr (1987)
    Springer
    The European physical journal 327 (1987), S. 359-360 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An 8+ state has been identified at 4390 keV in the doubly semi-magic nucleus96Zr through the study of angular correlations among the γ radiation which is emitted in the β− decay of the 10 s isomer of96Y. This state probably has the configuration πg 9 2/2 and is populated through a GT decay from the 8+ member of the [πg9/2⊗νg7/2] multiplet in96Y. The deexcitation indicates that it belongs to a band based on the 0+ state in96Zr.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01284461
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  • 16
    Electronic Resource
    Electronic Resource
    The ground-state deformation of98Sr (1987)
    Springer
    The European physical journal 327 (1987), S. 483-484 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The half-life of the first excited state (2 1 + ) of98Sr has been determined through the measurement of delayed γ-γ coincidences at the fission product separator OSTIS to t1/2=2.74(12) ns. This value is smaller than those obtained earlier from β− — conversion electron delayed coincidences and it indicates a stronger collectivity of the 2 1 + →0 1 + transition in98Sr [B(E2)=98 (3) spu] than in100Sr [B(E2)=79(3) spu] which is normally assumed to be the better rotor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01289575
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