Analyzing power measurements for {sup 209}Bi({ital n},{ital n}) at 6 and 9 MeV and consistent dispersive optical-model analyses for {ital n}+{sup 209}Bi and {ital n}+{sup 208}Pb from {minus}20 to +80 MeV
- Department of Physics, Duke University and Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708-0308 (United States)
- Physikalisches Institut, University of Tuebingen (Federal Republic of Germany)
High-accuracy measurements of {ital A}{sub {ital y}}({theta}) data for elastic scattering for {ital n}+{sup 209}Bi have been performed at 6 and 9 MeV. The data are incorporated into a large database of {sigma}({theta}), {ital A}{sub {ital y}}({theta}), and {sigma}{sub {ital T}} for {ital n}+{sup 209}Bi covering the energy range 1.0{endash}80 MeV. A complementary database is constructed for {ital n}+{sup 208}Pb and a dispersive optical-model analysis is performed for both scattering systems while constraining many of the parameters to be identical for both systems. A good representation of both databases is obtained with conventional geometry and spin-orbit parameters. The {sup 208}Pb model predicts quite well the measured energies of valence single-particle and single-hole bound states. Occupation probabilities and spectroscopic factors for the same bound states are also calculated. Finally, a fully constrained model is presented in which the only differences between the {ital n}+{sup 208}Pb and the {ital n}+{sup 209}Bi systems are the Fermi energy and the isospin dependence in the real volume potential. {copyright} {ital 1996 The American Physical Society.}
- Research Organization:
- Duke Univ., Durham, NC (United States)
- DOE Contract Number:
- FG05-91ER40619
- OSTI ID:
- 392056
- Journal Information:
- Physical Review, C, Vol. 54, Issue 5; Other Information: PBD: Nov 1996
- Country of Publication:
- United States
- Language:
- English
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