Selective population and neutron decay of an excited state of 23O.
We have observed a resonance in neutron-fragment coincidence measurements that is presumably the first excited state of 23O at 2.8(1) MeV excitation energy which decays into the ground state of 22O. This interpretation is consistent with theory. The reaction mechanism supports the assignment of the observed state as the 5/2+ hole state. This assignment and the recently observed 3/2+ particle state advance the understanding of 23O.
Schiller
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A
National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA. schiller@nscl.msu.edu
Frank
N
N
Baumann
T
T
Bazin
D
D
Brown
B A
BA
Brown
J
J
DeYoung
P A
PA
Finck
J E
JE
Gade
A
A
Hinnefeld
J
J
Howes
R
R
Lecouey
J-L
JL
Luther
B
B
Peters
W A
WA
Scheit
H
H
Thoennessen
M
M
Tostevin
J A
JA