DOI: 10.1140/epja/i2001-10240-x
Molecular structure of nuclei
H. HoriuchiDepartment of Physics, Kyoto University, Kyoto 606-8502, Japan horiuchi@ruby.scphys.kyoto-u.ac.jp
(Received: 21 March 2002 / Published online: 31 October 2002)
Abstract
Cluster structures of nuclei are discussed, with emphasis on nuclear
clustering in unstable nuclei. The subjects we discuss are alpha
condensed states, clustering in Be and B isotopes, and clustering
in
32Mg and
30Ne. The subject of alpha cluster condensation
comes from the clustering nature of dilute nuclear matter. We
discuss that recent heavy-ion central collision experiments give us
nice evidence of the clustering in dilute nuclear matter. We
then present a new prediction of the existence of the
"alpha cluster condensed states" in the self-conjugate
4n nuclei
around the breakup threshold energy into
n alpha-particles. As
for the clustering in neutron-rich Be, we discuss the comparison
between the antisymmetrized molecular-dynamics results and the recent experimental data, which
shows that the clustering feature manifests itself very clearly in
neutron-rich Be isotopes both in the ground and excited states.
Clustering in Be isotopes near neutron dripline is intimately related
to the breaking of the neutron magic number
N=8. We
report our recent study about the possible relationship between the
clustering and the breaking of the neutron magic number
N=20
in
32Mg and
30Ne.
21.60.-n - Nuclear-structure models and methods.
© Società Italiana di Fisica, Springer-Verlag 2002