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Phys. Rev. C 62, 044309 (2000) [4 pages]

Excited states in 110I and core polarization effects of the h11/2 proton and neutron orbitals

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K. Starosta*, D. R. LaFosse, C. J. Chiara, D. B. Fossan, T. Koike, G. J. Lane†, J. M. Sears, and J. F. Smith‡
Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794-3800

A. J. Boston, P. J. Nolan, E. S. Paul, and A. T. Semple
Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom

M. Devlin§ and D. G. Sarantites
Department of Chemistry, Washington University, St. Louis, Missouri 63130

I. Y. Lee and A. O. Macchiavelli
Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720

Received 2 February 2000; published 8 September 2000

Excited states in 110I have been identified for the first time using the αpn evaporation channel from the 58Ni+58Ni reaction at a beam energy of 250 MeV. The experiment was carried out using GAMMASPHERE coupled to the MICROBALL charged-particle detector array and an array of 15 neutron detectors. Two collective structures were observed with the yrast band built on the πh11/2⊗νh11/2 configuration. Comparisons of the yrast-band energies with the excitation energies of the yrast states in even 52Te and in odd 52Te and 53I isotopes for A∼110 were analyzed, revealing different responses of the underlying cores to the valence πh11/2 and νh11/2 orbitals. It is concluded that the neutron h11/2 valence orbital has a larger influence than that of the proton h11/2 valence orbital.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.62.044309
DOI:
10.1103/PhysRevC.62.044309
PACS:
21.10.Re, 23.20.Lv, 27.60.+j

*On leave from: Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland.

†Present address: Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720.

‡Present address: Schuster Laboratory, The University of Manchester, Manchester M13 9PL, United Kingdom.

§Present address: LANSCE-3, Los Alamos National Laboratory, Los Alamos, NM 87545.

 
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