Study of the unbound nucleus N-11 by elastic resonance scattering

L Axelsson, Borge MJG, S Fayans, VZ Goldberg, S Grevy, D GuillemaudMueller, B Jonson, Kjell-Mikael Källman, T Lonnroth, M Lewitowicz, P Manngard, K Markenroth, I Martel, AC Mueller, I Mukha, T Nilsson, G Nyman, NA Orr, K Riisager, GV RogatchevMG SaintLaurent, IN Serikov, O Sorlin, O Tengblad, F Wenander, JS Winfield, R Wolski, R Wolski

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Resonances in the unbound nucleus N-11 have been studied, using the resonance scattering reaction C-10+p. The data give evidence for three states above the C-10+p threshold with energies 1.30, 2.04, and 3.72 MeV. These states can be interpreted, in a potential-model analysis, as the ground state and the first two excited states with spin-parity 1/2(+), 1/2(-), and 5/2(+) arising from the shell-model orbitals 1s(1/2), Op(1/2), and Od(5/2). A narrow state superposed on a broad structure found at higher energy could be interpreted as the mirror state of the 3/2(-) in Be-11 shifted down in energy. This shift would suggest a large radius of the potential.
AlkuperäiskieliEi tiedossa
JulkaisuPhysical Review C
TilaJulkaistu - 1996
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu