Low-lying Gamow-Teller states in {sup 92}Nb
- Ohio University, Athens, Ohio 45701 (United States)
- Lawrence Livermore National Laboratory, University of California, Livermore, California 94550 (United States)
- Oregon State University, Corvallis, Oregon 97331 (United States)
- I. Institut fuer Experimentalphysik, University of Hamburg (Federal Republic of Germany)
Cross sections for the ({ital p},{ital n}) reaction on targets of {sup 90}Zr and {sup 92}Zr have been measured at 26 MeV. Our resolution for these measurements was better than 200 keV and allowed the observation of numerous 1{sup +} states in {sup 92}Nb below 7 MeV excitation. Our analysis is focused on states below the primary Gamow-Teller state and shows a fragmentation of the Gamow-Teller strength that is only partially accounted for by three different model calculations: a quasiparticle model, a shell model, and a random-phase approximation calculation. All three models yield predictions which include appreciable strength between 3 and 7 MeV excitation, but fail to describe our experimental results in detail. {copyright} {ital 1996 The American Physical Society.}
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 284756
- Journal Information:
- Physical Review, C, Vol. 53, Issue 6; Other Information: PBD: Jun 1996
- Country of Publication:
- United States
- Language:
- English
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