Neutron knockout ofBe12populating neutron-unbound states inBe11

Experimental study of bound states in12Be through low-energy11Be(d,p)Johansen1, Bildstein2, Borge3 et al. 2013Phys. Rev. C283180View full textAdd to dashboardCite

“…The validity of the values from set IV has already been questioned, due to the discrepancy in the angular shapes. The strong disagreement between sets III and IV is in contradiction with the result found in [25], where the two sets are claimed to provide consistent results. The spectroscopic factors for the excited states found by set III are consistent with the values found in [25].…”

“…The strong disagreement between sets III and IV is in contradiction with the result found in [25], where the two sets are claimed to provide consistent results. The spectroscopic factors for the excited states found by set III are consistent with the values found in [25]. For the excited 0 + 2 state the previous determination carried a large uncertainty since the 2 + 1 and the 0 + 2 states could not be separated in [25].…”

“…The spectroscopic factors for the excited states found by set III are consistent with the values found in [25]. For the excited 0 + 2 state the previous determination carried a large uncertainty since the 2 + 1 and the 0 + 2 states could not be separated in [25]. The states are identified and separately analyzed in this experiment, and this should provide a more reliable value for the 0 + 2 state.…”

“…The configuration mixing was first suggested in 1976 by Barker [17] following a β-decay study of 12 Be. Further experimental support for this suggestion has come through measurements of transition strengths to the 1 − 1 [18], 0 + 2 [19,20], and 2 + 1 bound states [21], through extraction of the ground state charge radius [22], and through nuclear knock-out [23], break-up [24,25], transfer [26], and charge exchange [27] reactions. These measurements have shown that the N = 8 magic number is clearly broken in 12 Be and the detailed mixing of the shells is still being investigated.…”

Reply to “Comment on ‘Neutron knockout of12Bepopulating neutron-unbound states in11Be’ ”

“…The best fit was achieved with a single resonance of decay energy 80 (2) In his Comment [1], Fortune discusses the possibility that the decay-energy spectrum of 11 Be from the original paper (Ref. [2]) could be described with contributions from two states at excitation energies of 3.887 and 3.955 MeV decaying to the 2 + excited state in 10 Be. This would correspond to decay energies of 18 and 86 keV.…”