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Träfflista för sökning "WFRF:(Daugas E.) srt2:(2002-2004)"

Sökning: WFRF:(Daugas E.) > (2002-2004)

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1.
  • Grawe, H, et al. (författare)
  • Experimental approach towards shell structure at Sn-100 and Ni-78
  • 2002
  • Ingår i: Nuclear Physics, Section A. - 0375-9474. ; 704, s. 211-222
  • Tidskriftsartikel (refereegranskat)abstract
    • The status of experimental approach to Sn-100 and Ni-78 is reviewed. Revised single particle energies for neutrons are deduced for the N=Z=50 shell closure and evidence for low lying I-pi=2(+) and 3(-) states is presented. Moderate E2 polarization charges of 0.1 e and 0.6 e are found to reproduce the experimental data when core excitation of Sn-100 is properly accounted for in the shell model. For the neutron rich Ni region no conclusive evidence for an N=40 subshell is found, whereas firm evidence for the persistence of the N=50 shell at Ni-78 is inferred from the existence of seniority isomers. The disappearance of this isomerism in the mid nug(9/2) shell is discussed.
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2.
  • Stanoiu, M., et al. (författare)
  • Study of neutron rich carbon and oxygen nuclei up to drip line
  • 2004
  • Ingår i: Nuclear Physics A. - : Elsevier BV. - 0375-9474 .- 1873-1554. ; 746, s. 135C-139C
  • Tidskriftsartikel (refereegranskat)abstract
    • In-beam gamma-spectroscopy using fragmentation reactions of radioactive beams have been performed in order to study the structure of excited states in neutron rich oxygen and carbon isotopes. For the produced fragments, gamma-ray energies, intensities and gamma-gamma coincidences have been measured. The experiment was performed at GANIL. New gamma-lines have been identified and placed in level schemes for C17-20. The non observation of any gamma-ray in O-23,O-24 suggests that their first excited states lie above the neutron threshold. These results are discussed in the framework of shell model calculations.
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