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Träfflista för sökning "WFRF:(Jin L.) srt2:(1995-1999)"

Sökning: WFRF:(Jin L.) > (1995-1999)

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  • Brinkman, M J, et al. (författare)
  • Decay from a superdeformed band in Pb-194
  • 1996
  • Ingår i: Physical Review C. Nuclear Physics. - 0556-2813 .- 1089-490X. ; 53:4, s. R1461-R1464
  • Tidskriftsartikel (refereegranskat)abstract
    • Three experiments using the (174) Yb(Mg-25,5n)Pb-194 reaction have been undertaken at the Early Implementation of Gammasphere to study the decay of known superdeformed states in Pb-194. A single discrete transition with an energy of 2.746(2) MeV carrying 6(2)% of the full superdeformed band intensity has been identified. A discussion of our results and the assignment of the 2.746-MeV transition as a discrete gamma ray directly connecting the superdeformed 8(+) and low-lying 6(+) levels will be presented.
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  • McNabb, D P, et al. (författare)
  • Superdeformation in Po-198
  • 1996
  • Ingår i: Physical Review C. Nuclear Physics. - 0556-2813 .- 1089-490X. ; 53:2, s. R541-R543
  • Tidskriftsartikel (refereegranskat)abstract
    • The Yb-174(Si-29,5n) reaction at 148 MeV with thin targets was used to populate high-angular momentum states in Po-198. Resulting gamma rays were observed with Gammasphere. A weakly populated superdeformed band of 10 gamma-ray transitions was found and has been assigned to Po-198. This is the first observation of an SD band in the A approximate to 190 region in a nucleus with Z > 83. The J((2))) of the new band is very similar to those of the yrast SD bands in Hg-194 and Pb-196. The intensity profile suggests that this band is populated through states close to where the SD band crosses the yrast line and the angular momentum at which the fission process dominates.
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  • Rudolph, Dirk, et al. (författare)
  • High-spin Shell-model States Near 56Ni
  • 1999
  • Ingår i: European Physical Journal A. Hadrons and Nuclei. - 1434-6001. ; 4:2, s. 115-145
  • Tidskriftsartikel (refereegranskat)abstract
    • High-spin states of nuclei near doubly magic Ni-56 were studied with the reaction Si-28(Ar-36, xpynz alpha) at 136 MeV beam energy. The GAMMASPHERE array in conjunction with the 4 pi charged-particle detector array MICROBALL and neutron detectors were used to detect gamma rays in coincidence with evaporated light particles. The resulting extensive decay schemes of Fe-54, Co-54,Co-55, Ni-56,Ni-57, and Cu-58 are compared to shell model calculations in the fp shell.
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  • Rudolph, Dirk, et al. (författare)
  • Rotational Bands in the Doubly Magic Nucleus 56Ni
  • 1999
  • Ingår i: Physical Review Letters. - 1079-7114. ; 82:19, s. 3763-3766
  • Tidskriftsartikel (refereegranskat)abstract
    • Structures of the medium- to high-spin states in the doubly magic nucleus Ni-56 have been investigated using the reaction Si-28(Ar-36, 2 alpha) and the gamma-ray spectrometer Gammasphere in conjunction with the 4 pi charged-particle detector array Microball. Two well-deformed rotational bands have been identified. There is evidence that one of the bands, which is identical to a sequence in the odd-odd neighbor Cu-58, partially decays via proton emission into the ground state of Co-55. Predictions of extensive large-scale shell-model and cranked Hartree-Fock and Hartree-Fock-Bogolyubov calculations are compared with the experimental data.
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