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Título : 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
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
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.62.034308
Citación : Physical Review C 62(3): 034308 (2000)
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