Proton decay of states in11N

Spectroscopic study of the unbound 11N nucleus

“…3). This L assignment and the narrow width observed for this level in this and in the other experiments [3,4,5,6,7] would indicate that it is the analog of the J π = …”

“…Other reactions were used to investigate the structure of 11 N [3,4,5,6,7]. The energies and widths of the observed levels are shown in Table I for comparison.…”

Structure of unstable light nuclei

“…3. However, the width of the 3.41 MeV level is over 100 keV [62] and this is inconsistent with the small d 3/2 spectroscopic predicted for the lowest All three states of the K π = 1 2 − band have large parentages for neutron removal from 12 N. The proton spectrum which results from the decay of the resulting 11 N states has been studied [65] and can be qualitatively reproduced using the calculated decay widths for the p-shell states of 11 N.…”

Observation of theN11Ground State

“…New experiments [7,8] claim to observe the 1͞2 1 ground state below the 1͞2 2 state: Axelsson [7] reports the resonance at 1.3 MeV (G 0.99 MeV) and Azhari [8] 11 N resonances, measured in this work, by our former work [6], by Axelsson et al [7], and compared to theoretical calculations of Fortune et al [10] and Barker [11].…”

“…The extraction of the 11 Be ground-state parentage from the recently measured value of its magnetic moment [5] is very sensitive to the quenching of the single particle magnetic moment. The controversial results on the 11 Be ground-state parentage add new interest to the search [6][7][8] of the 1͞2 1 resonance as the ground state of 11 N, its mirror nucleus. The sequential proton decay of the 12 O through the 11 N ground state and the hindrance of its diproton decay-observed by [9]-depends on the position and width of the 11 N ground-state resonance.…”