Core-excited states in the doubly magic 68Ni and its neighbor 69Cu

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

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Abstract

In deep-inelastic collisions of 8 MeV/nucleon 70Zn projectiles with 198Pt, we have found an 8+ isomer with T1/2=23(1)ns at 4208 keV in 68Ni; the vg9/2 E2 effective charge was determined to be 1.5(1)e. In 69Cu, a 19/2- isomer with T1/2=22(1)ns at 3691 keV was identified and its decay data were calculated quite accurately by a parameter-free shell model calculation using empirical input parameters. Proton 2p- 1h excitation, fed by another T1/2=39(6)ns isomer at 3827 keV, induces large collectivity in 69Cu.

Original languageEnglish
Pages (from-to)39-42
Number of pages4
JournalPhysical Review Letters
Volume84
Issue number1
DOIs
Publication statusPublished - Jan 1 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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