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Registro de acceso abierto Crossing the dripline to N-11 using elastic resonance scattering

Autor :Markenroth, K.
Axelsson, L.
Baxter, S.
García Borge, María José
Donzaud, C.
Fayans, S.
Fynbo, H. O. U.
Goldberg, V. Z.
Grévy, S.
Guillemaud-Mueller, D.
Jonson, B.
Källman, K.-M.
Leenhardt, S.
Lewitowicz, M.
Lönnroth, T.
Manngard, P.
Martel, Ismael
Mueller, A. C.
Mukha, I.
Nilsson, T.
Nyman, G.
Orr, N. A.
Riisager, K.
Rogachev, G. V.
Saint-Laurent, M. G.
Serikov, I. N.
Shul’gina, N. B.
Sorlin, O.
Steiner, M.
Tengblad, Olof
Thoennessen, M.
Tryggestad, E.
Trzaska, W. H.
Wenander, F.
Winfield, J. S.
Wolski, R.
Palabras clave :[PACS] Spin, parity, and isobaric spin, [PACS] Single-particle levels and strength functions, [PACS] Resonance reactions, [PACS] Properties of specific nuclei listed by mass ranges: 6 ≤ A ≤ 19
Fecha de publicación :16-ago-2000
Editor:American Physical Society
Citación :Physical Review C 62(3): 034308 (2000)
Resumen: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 (Γ = 1.44 ± 0.2 MeV), 2.01(-0.05)(+0.15) MeV (Γ = 0.84 ± 0.2 MeV), and 3.75 ± 0.05 MeV (Γ = 0.60 ± 0.05 MeV) with the spin-parity assignments I(π)=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(-).
Descripción :12 pages, 4 tables, 9 figures.-- PACS nrs.: 21.10.Hw; 21.10.Pc; 25.40.Ny; 27.20.+n.
Versión del editor:http://dx.doi.org/10.1103/PhysRevC.62.034308
URI :http://hdl.handle.net/10261/7330
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