Isospin and spin-orbital structures of J{sup {pi}}=1{sup +} states excited in {sup 28}Si
- Department of Physics, Osaka University, Toyonaka, Osaka 560 (Japan)
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567 (Japan)
- Kernfysisch Versneller Instituut, Zernikelaan 25, 9747 AA Groningen (The Netherlands)
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109 (United States)
- Institut fuer Kernphysik, Technische Hochschule Darmstadt, D-64289 Darmstadt (Germany)
- Department of Physics, Tokushima University, Tokushima 770 (Japan)
- Department of Physics, Kyoto University, Sakyo, Kyoto 606 (Japan)
- Kobe Tokiwa Jr. College, Nagata, Kobe 653 (Japan)
Gamow-Teller (GT) states with J{sup {pi}} = 1{sup +} excited by a (p,n)-type charge-exchange reaction on N=Z nuclei with ground-state isospin T=0 have isospin T=1, while M1 states excited by inelastic scattering of electrons or protons can have either T=0 or T=1. The latter are the isobaric analog states of the GT states. By comparing the GT states observed in the good-resolution ({sup 3}He,t) reaction at 150 MeV/nucleon with the M1 states observed in inelastic electron and proton reactions, the isospin structure of the 1{sup +} states in {sup 28}Si has been determined. From an analysis of the strengths of corresponding 1{sup +} states observed in the ({sup 3}He,t) and (e,e{sup {prime}}) reactions, the spin and orbital contributions to the M1 excitations have been deduced. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 512755
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 3 Vol. 55; ISSN PRVCAN; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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