Nanosecond isomers in neutron-rich 67Cu and 64Co and a fast E3 transition in 67Cu

M. Asai, T. Ishii, A. Makishima, I. Hossain, M. Ogawa, S. Ichikawa

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


Gamma-ray cascades from nanosecond isomers in neutron-rich nuclei 67Cu and 64Co have been observed through heavy-ion deep-inelastic collisions of 198Pt+ 76Ge (8 MeV/nucleon) using an isomer-scope. In 67Cu, an isomeric state at 3464 keV and its decay scheme have been established. The isomeric transition is a hindered M 1 transition between the 15/2+ and the 13/2+ states with main components of (πp3/2vg9/2vf-15/2) 15/2+ and (πp3/2vg9/2vp1/2)13/2+, respectively. A fast E3 transition between the πg9/2 and the πp3/2 single-particle states indicates strong particle-octupole vibration coupling in 67Cu. An isomeric state at 834 keV with T1/2 = 6.4(3) ns has been identified in 64Co. Proton-neutron configurations of the levels established in 64Co are discussed.

Original languageEnglish
Article number054313
Pages (from-to)543131-543137
Number of pages7
JournalPhysical Review C - Nuclear Physics
Issue number5
Publication statusPublished - Nov 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


Dive into the research topics of 'Nanosecond isomers in neutron-rich 67Cu and 64Co and a fast E3 transition in 67Cu'. Together they form a unique fingerprint.

Cite this