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Phys. Rev. C 59, 118 - 128 (1999)

Isoscalar spin excitation in 90Zr and 208Pb

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C. Djalali1,2, M. Morlet2, N. Marty2 *, J. Van de Wiele2, A. Willis2, F. T. Baker3, L. Bimbot2, C. Glashausser4, J. Guillot2, H. Langevin-Joliot2, L. Rosier2, and E. Tomasi-Gustafsson5
1Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208
2CNRS-IN2P3, Institut de Physique Nucléaire, Orsay, BP N° 1, F-91406, France
3Department of Physics and Astronomy, University of Georgia, Athens, Georgia 30602
4Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854
5DAPNIA-SPhN and Laboratoire National Saturne, CEN Saclay, F-91191 Gif-sur-Yvette Cedex, France

Received 26 March 1998

Isoscalar spin-transfer excitations have been measured in 90Zr and 208Pb by inelastic scattering of vector and tensor polarized 400 MeV deuterons in an excitation energy range from 2.5 to 43 MeV and 2.3 to 23 MeV, respectively. For 90Zr, spin excitations were found between 7.5 and 10.7 MeV and in a large structure in the continuum (18 to 28 MeV). For 208Pb, spin excitations were found at 3.55 and 5.85 MeV, between 6.5 and 11 MeV, and spread over the continuum. Elastic scattering cross sections and vector and tensor analyzing powers were measured between 3.4 and 24 ° for Zr and Pb, and optical potential parameters were derived. The experimental results are compared to DWIA/RPA calculations. The transition densities used are generated using the continuum random phase approximation.


©1999 The American Physical Society

URL: http://link.aps.org/abstract/PRC/v59/p118
DOI: 10.1103/PhysRevC.59.118
PACS: 25.45.De, 24.70.+s, 27.60.+j, 27.80.+w

* Deceased.

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