https://doi.org/10.1140/epjad/i2005-06-032-2
ENAM 2004
Shell-model description of neutron-rich pf-shell nuclei with a new effective interaction GXPF 1
1
Center for Mathematical Sciences, University of Aizu, Tsuruga, Ikki-machi, Aizu-Wakamatsu, 965-8580, Fukushima, Japan
2
Department of Physics and Center for Nuclear Study, University of Tokyo, Hongo, 113-0033, Tokyo, Japan
3
RIKEN, Hirosawa, Wako-shi, 351-0198, Saitama, Japan
4
National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, 48824-1321, East Lansing, MI, USA
5
Institute of Natural Sciences, Senshu University, Higashimita, Tama, Kawasaki, 214-8580, Kanagawa, Japan
* e-mail: m-honma@u-aizu.ac.jp
Received:
1
October
2004
Accepted:
18
February
2005
Published online:
22
April
2005
The shell-model effective interaction GXPF1 is tested for the description of unstable pf-shell nuclei. The GXPF1 successfully describes the N = 32 shell gap in Ca, Ti and Cr isotopes, while the deviation of predicted E x(2+ 1) in 56Ti from the recent experimental data requires the modification of the Hamiltonian especially in the T = 1 matrix elements related to the p 1/2 and f 5/2 orbits. The modified interaction gives improved description simultaneously for all these isotope chains.
PACS: 21.60.Cs Shell model – / 21.30.Fe Forces in hadronic systems and effective interactions –
© Società Italiana di Fisica and Springer-Verlag, 2005