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Träfflista för sökning "((LAR1:cth) pers:(Nilsson Thomas 1965) pers:(Kratz J. V.)) srt2:(2010-2014) srt2:(2013)"

Sökning: ((LAR1:cth) pers:(Nilsson Thomas 1965) pers:(Kratz J. V.)) srt2:(2010-2014) > (2013)

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1.
  • Rossi, D., et al. (författare)
  • Coulomb excitation of exotic nuclei at the R3B-LAND setup
  • 2013
  • Ingår i: Journal of Physics: Conference Series. - : IOP Publishing. - 1742-6588 .- 1742-6596. ; 420:1
  • Konferensbidrag (refereegranskat)abstract
    • Exotic Ni isotopes have been measured at the R3B-LAND setup at GSI in Darmstadt, using Coulomb excitation in inverse kinematics at beam energies around 500 MeV/u. As the experimental setup allows kinematically complete measurements, the excitation energy was reconstructed using the invariant mass method. The GDR and additional low-lying strength have been observed in 68Ni, the latter exhausting 4.1(1.9)% of the E1 energy-weighted sum rule. Also, the branching ratio for the non-statistical decay of the excited 68Ni nuclei was measured and amounts to 24(4)%.
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2.
  • Rossi, D., et al. (författare)
  • Measurement of the dipole polarizability of the unstable neutron-rich nucleus Ni68
  • 2013
  • Ingår i: Physical Review Letters. - 1079-7114 .- 0031-9007. ; 111:24
  • Tidskriftsartikel (refereegranskat)abstract
    • The E1 strength distribution in Ni68 has been investigated using Coulomb excitation in inverse kinematics at the RB3-LAND setup and by measuring the invariant mass in the one- and two-neutron decay channels. The giant dipole resonance and a low-lying peak (pygmy dipole resonance) have been observed at 17.1(2) and 9.55(17) MeV, respectively. The measured dipole polarizability is compared to relativistic random phase approximation calculations yielding a neutron-skin thickness of 0.17(2) fm. A method and analysis applicable to neutron-rich nuclei has been developed, allowing for a precise determination of neutron skins in nuclei as a function of neutron excess.
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