The structure of the deformed nucleus42103Mo61 View Full Text


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Article Info

DATE

1993-06

AUTHORS

M. Liang, H. Ohm, I. Ragnarsson, K. Sistemich

ABSTRACT

The lifetimes of the three lowest excited members of the rotational ground-state band of103Mo at 102.6, 241.1 and 433.2 keV as well as of the levels at 353.8 and 456.1 keV have been determined through a measurement of the delayed coincidences betweenβ particles from the decay of the parent103Nb and theγ rays which depopulate the levels. A plastic and a BaF2 detector have been used for theβ andγ rays, respectively, in these experiments at the fission product separator JOSEF. The results for all three band members evince that this nucleus has a sizeable deformation, with a value ofβq=0.34(1). This value is larger than that of the neighbouring even-even Mo isotopes which indicates an odd-even effect. On the other hand it confirms the observation that the Mo nuclei are in general less strongly deformed than their Sr and Zr isotones. Particle-rotor model calculations with the Nilsson parametersκ=0.084,μ=0.28 provide a good description of the ground-state band and of a side band based on the 346.5 keV level, including the new lifetimes. This substantiates the Nilsson orbital assignments of [411]3/2+ and [532]5/2− for these two bands, respectively, where the sideband is strongly affected by a [541]3/2− admixture. There is evidence for an additional band based on the 641.1 keV level for which the assignment [422]3/2+ is proposed. More... »

PAGES

101-109

References to SciGraph publications

  • 1991-03. The deformedN=60 nucleus41101Nb in ZEITSCHRIFT FÜR PHYSIK A HADRONS AND NUCLEI
  • 1991. The Cranked Nilsson Model in COMPUTATIONAL NUCLEAR PHYSICS 1
  • 1985-09. The nilsson-potential parameters for neutrons at A≃-100 and new deformation values for103Mo and105Mo in ZEITSCHRIFT FÜR PHYSIK A HADRONS AND NUCLEI
  • 1991-06. The deformation of the neutron-rich isotopes102Mo and104Mo in ZEITSCHRIFT FÜR PHYSIK A HADRONS AND NUCLEI
  • 1984-02. Rotational bands in99Sr in ZEITSCHRIFT FÜR PHYSIK A HADRONS AND NUCLEI
  • 1984-02. Odd neutron nuclei near A=100: Rotational bands in103Mo and105Mo populated in theβ− decays of103Nb and105Nb in ZEITSCHRIFT FÜR PHYSIK A HADRONS AND NUCLEI
  • 1991-06. Structure of the Triplet of low-lying states in101Mo in ZEITSCHRIFT FÜR PHYSIK A HADRONS AND NUCLEI
  • 1985-03. Deformation and shape coexistence in medium mass nuclei in HYPERFINE INTERACTIONS
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/bf01294625

    DOI

    http://dx.doi.org/10.1007/bf01294625

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1047288789


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