Neutron knockout of populating neutron-unbound states in
Physical Review C—Nuclear Physics, 2011•APS
Neutron-unbound resonant states of Be 11 were populated in neutron knockout reactions
from Be 12 and identified by Be 10–n coincidence measurements. A resonance in the decay-
energy spectrum at 80 (2) keV was attributed to a highly excited unbound state in Be 11 at
3.949 (2) MeV decaying to the 2+ excited state in Be 10. A knockout cross section of 15 (3)
mb was inferred for this 3.949 (2) MeV state, suggesting a spectroscopic factor near unity for
this 0 p 3/2-level, consistent with the detailed shell model calculations.
from Be 12 and identified by Be 10–n coincidence measurements. A resonance in the decay-
energy spectrum at 80 (2) keV was attributed to a highly excited unbound state in Be 11 at
3.949 (2) MeV decaying to the 2+ excited state in Be 10. A knockout cross section of 15 (3)
mb was inferred for this 3.949 (2) MeV state, suggesting a spectroscopic factor near unity for
this 0 p 3/2-level, consistent with the detailed shell model calculations.
Neutron-unbound resonant states of were populated in neutron knockout reactions from and identified by – coincidence measurements. A resonance in the decay-energy spectrum at 80(2) keV was attributed to a highly excited unbound state in at 3.949(2) MeV decaying to the excited state in . A knockout cross section of 15(3) mb was inferred for this 3.949(2) MeV state, suggesting a spectroscopic factor near unity for this level, consistent with the detailed shell model calculations.
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