Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2004-06-23
Nucl.Phys. A742 (2004) 271-290
Physics
Nuclear Physics
Nuclear Experiment
accepted for publication in Nuclear Physics A
Scientific paper
10.1016/j.nuclphysa.2004.06.027
Studies of the 16O(9Be,alpha7Be)14C and 7Li(9Be,alpha7Li)5He reactions at E{beam}=70 MeV have been performed using resonant particle spectroscopy techniques. The 11C excited states decaying into alpha+7Be(gs) are observed at 8.65, 9.85, 10.7 and 12.1 MeV as well as possible states at 12.6 and 13.4 MeV. This result is the first observation of alpha-decay for excited states above 9 MeV. The alpha+7Li(gs) decay of 11B excited states at 9.2, 10.3, 10.55, 11.2, (11.4), 11.8, 12.5,(13.0), 13.1, (14.0), 14.35, (17.4) and (18.6) MeV is observed. The decay processes are used to indicate the possible three-centre 2alpha+3He(3H) cluster structure of observed states. Two rotational bands corresponding to very deformed structures are suggested for the positive-parity states. Excitations of some observed T=1/2 resonances coincide with the energies of T=3/2 states which are the isobaric analogs of the lowest 11Be states. Some of these states may have mixed isospin.
Catford W. N.
Clarke N. M.
Donadille L.
Freer Martin
Fulton Brian R.
No associations
LandOfFree
alpha-decay of excited states in 11C and 11B does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with alpha-decay of excited states in 11C and 11B, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and alpha-decay of excited states in 11C and 11B will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-248074