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Träfflista för sökning "WFRF:(Marginean R.) srt2:(2001-2004)"

Search: WFRF:(Marginean R.) > (2001-2004)

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1.
  • de Angelis, G., et al. (author)
  • Coherent proton-neutron contribution to octupole correlations in the neutron-deficient Xe-114 nucleus
  • 2002
  • In: Physics Letters B. - 0370-2693 .- 1873-2445. ; 535:04-jan, s. 93-102
  • Journal article (peer-reviewed)abstract
    • Gamma ray linear polarization and picosecond lifetimes have been measured for levels in the neutron deficient nucleus Xe-114 using the EUROBALL IV spectrometer and the Cologne plunger device. The EUCLIDES Si-ball was used to improve the reaction channel selectivity. The linear polarization results have, for the first time, unambiguously determined the electromagnetic character of the dipole transitions de-exciting the negative parity level sequence, providing clear evidence for enhanced octupole collectivity. The discovery of two E3 transitions and the measurement of the lifetimes of the states depopulated by these transitions have allowed a quantitative determination of the octupole collectivity in the A approximate to 112 mass region. The large measured B(E3) values, close to approximate to 70 W.u., are among the strongest observed hitherto and indicate a coherent proton-neutron contribution to the octupole moment.
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2.
  • Spolaore, P., et al. (author)
  • Identification and study of the very neutron deficient nuclide I-111 : search for octupole correlations in the region of N approximate to Z approximate to 56
  • 2001
  • In: Nuclear Physics A. - 0375-9474 .- 1873-1554. ; 682, s. 387C-393C
  • Journal article (peer-reviewed)abstract
    • High-spin states in the neutron-deficient nuclide I-111 have been populated with the fusion reaction Ni-58 + Ni-58 at a beam energy of 210 MeV, in an experiment performed at the Tandem Accelerator of the Laboratori Nazionali di Legnaro. The gamma spectrometer GASP was used in time coincidence with the ISIS Si-ball and the CAMEL recoil mass spectrometer for the positive identification of the nuclide. Gamma transitions and structure details previously attributed to I-111 by Other authors are only partially confirmed. The obtained level scheme includes new rotational bands and a new low lying structure which suggests the presence of octupole correlations at predicted rotational frequency values.
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3.
  • Lunardi, S, et al. (author)
  • Highly deformed band in Nd-138
  • 2004
  • In: Physical Review C (Nuclear Physics). - 0556-2813. ; 69:5
  • Journal article (peer-reviewed)abstract
    • High-spin states in Nd-138 have been investigated with the reaction Zr-94(Ca-48,4n), using the GASP array. A new rotational band has been identified, which has close similarities with the well known highly deformed bands of the lighter Nd isotopes, and is therefore interpreted as built on the second minimum of the nuclear potential energy surface. From comparison with calculations a configuration is suggested which involves two neutrons in the i(13/2) deformation driving orbital.
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  • Result 1-3 of 3

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