Eur. Phys. J. A 13, 15-19 (2002)

Gamma-ray spectroscopy of the neutron-rich Ni region through heavy-ion deep-inelastic collisions

T. Ishii¹, M. Asai¹, A. Makishima², I. Hossain³, P. Kleinheinz³, M. Ogawa³, M. Matsuda¹ and S. Ichikawa<sup>1

1</sup>  Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan
²  Department of Liberal Arts and Sciences, National Defense Medical College, Tokorozawa, Saitama 359-8513, Japan
³  Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, 2-12-1 Oh-okayama, Meguro, Tokyo 152-8551, Japan

ishii@popsvr.tokai.jaeri.go.jp

(Received: 1 May 2001)

Abstract
Nuclei in the neutron-rich Ni region have been studied by -ray spectroscopy. Gamma-rays emitted from isomers, with T_1/2>1 ns, produced in heavy-ion deep-inelastic collisions were measured with an isomer-scope. The nuclear structure of the doubly magic ⁶⁸Ni and its neighbor ^69,71Cu is discussed on the basis of the shell model. Future experiments for more neutron-rich Ni nuclei are also viewed.

PACS
23.20.-g - Electromagnetic transitions.
21.60.Cs - Shell model.
25.70.Lm - Strongly damped collisions.

© Società Italiana di Fisica, Springer-Verlag 2002