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  • 1
    ISSN: 1435-3725
    Keywords: 21:60.Cs ; 23.20.Lv ; 27.40.+z
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Shell model calculations in the lower fp shell region, (for 44,45Ca and 47Sc nuclei) have been performed, with different model spaces, to probe the effect of configuration mixing from the p3/2, p1/2 and f5/2 orbitals on the predominantly (f7/2)n states and the contribution arising from the excitation of the N = Z = 16 core. Our calculations indicate that excitation of nucleons across the N = Z = 16 magic shell closure do contribute significantly towards the wavefunctions of the observed level structures of 44,45Ca nuclei. However the inclusion of these configurations did not result in a better agreement for the observed level structure of 47Sc nulcei. A plaussible explaination for this phenomena could be attributed to the two-body matrix elements used and calls for a detailed micro-scopic calculations involving fundamental interactions substantiated by additional spectroscopic data such as lifetime measurements to have an unambigious understanding of the intrinsic configurations of nuclei in this region.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1435-3725
    Keywords: 21:60.Cs ; 23.20.Lv ; 27.40.+z
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Shell model calculations in the lower fp shell region, (for 44,45Ca and 47Sc nuclei) have been performed, with different model spaces, to probe the effect of configuration mixing from the p3/2, p1/2 and f5/2 orbitals on the predominantly (f7/2)n states and the contribution arising from the excitation of the N = Z = 16 core. Our calculations indicate that excitation of nucleons across the N = Z = 16 magic shell closure do contribute significantly towards the wavefunctions of the observed level structures of 44,45Ca nuclei. However the inclusion of these configurations did not result in a better agreement for the observed level structure of 47Sc nulcei. A plaussible explaination for this phenomena could be attributed to the two-body matrix elements used and calls for a detailed micro-scopic calculations involving fundamental interactions substantiated by additional spectroscopic data such as lifetime measurements to have an unambigious understanding of the intrinsic configurations of nuclei in this region.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 349 (1994), S. 33-37 
    ISSN: 1434-601X
    Keywords: 23.20.Lv ; 23.20.En ; 21.60.Cs ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract High spin states in theN=50 nucleus93Tc were reinvestigated by using the reaction64Zn (35Cl,4p 2n) at a beam energy of 140 MeV. This was done particularly with a view to observe anyγ rays upto 2.7 MeV which may have been missed in our earlier study where the experimental conditions were set to observeγ rays upto 2 MeV. We found four newγ rays of energy: 2484, 2164, 2130 and 69 keV. We have placed theseγ rays in the level scheme and it now gets extended to 49/2−. Though there is no substantial change in the level scheme, placing theγ rays in the level scheme has resulted into two important conclusions: (1) We have performed shell model calculations for93Tc nucleus within a model space which encompasses an enlarged proton configuration and allows for the excitation of the neutron across theN=50 core. The excitation of a single neutron across theN=50 core satisfactorily explains the new level scheme. (2) The energy of the 17/2− isomeric state is now unambiguously placed at 2185 keV.
    Type of Medium: Electronic Resource
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