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Crossing the dripline to N-11 using elastic resonance scattering

  • K Markenroth
  • , L Axelsson
  • , S Baxter
  • , Borge MJG
  • , C Donzaud
  • , S Fayans
  • , Fynbo HOU
  • , VZ Goldberg
  • , S Grevy
  • , D Guillemaud-Mueller
  • , B Jonson
  • , Kjell-Mikael Källman
  • , S Leenhardt
  • , M Lewitowicz
  • , T Lonnroth
  • , P Manngard
  • , I Martel
  • , AC Mueller
  • , I Mukha
  • , T Nilsson
  • G Nyman, NA Orr, K Riisager, GV Rogachev, MG Saint-Laurent, IN Serikov, NB Shul'gina, O Sorlin, M Steiner, O Tengblad, M Thoennessen, E Tryggestad, WH Trzaska, F Wenander, JS Winfield, R Wolski

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Sammanfattning

The level structure of the unbound nucleus N-11 has been studied by C-10+p elastic resonance scattering in inverse geometry with the LISE3 spectrometer at GANIL, using a C-10 beam with an energy of 9.0 MeV/ nucleon. An additional measurement was done at the A1200 spectrometer at MSU. The excitation function above the C-10+p threshold has been determined up to 5 MeV. A potential-model analysis revealed three resonance states at energies 1.27(-0.05)(+0.18) MeV (Gamma = 1.44 +/- 0.2 MeV), 2.01(-0.05)(+0.15) MeV (Gamma = 0.84 +/- 0.2 MeV), and 3.75 +/- 0.05 MeV (Gamma = 0.60 +/- 0.05 MeV) with the spin-parity assignments I-pi=1/2+,1/2,-,5/2+, respectively. Hence, N-11 is shown to have a ground state parity inversion completely analogous to its mirror partner Be-11. A narrow resonance in the excitation function at 4.33 +/- 0.05 MeV was also observed and assigned spin parity 3/2-.
OriginalspråkOdefinierat/okänt
Sidor (från-till)
Antal sidor12
TidskriftPhysical Review C
Volym62
Nummer3
StatusPublicerad - 2000
MoE-publikationstypA1 Tidskriftsartikel-refererad

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