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Physical Review C 44 (1991) 2385-2389
Isospin character of the giant quadrupole transition in 124Sn
D. J. Horen, F.E. Bertrand, J.R. Beene, G.R. Satchler, W. Mittig1, A.C.C. Villari1, Y. Schutz1, Z. Wenlong1, E. Plagnol1, A. Gillibert2

Use has been made of the interference between the nuclear and Coulomb amplitudes in the scattering of 84 MeV/nucleon 17O ions by 124Sn to study the isospin character of the giant quadrupole transition. The data are well described by assuming the transition is ''isoscalar,'' i.e., Mn/Mp=N/Z. This is in disagreement with the results of π+/π- scattering on 118Sn and recent (e,e'n) measurements on 116Sn. Cross sections for excitation of the 2+ state at 1.132 MeV, 3- state at 2.614 MeV, and giant monopole resonance are included with corresponding coupled-channels calculations.
1 :  GANIL - Grand Accélérateur National d'Ions Lourds
2 :  IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (ex DAPNIA)
Physique/Physique Nucléaire Expérimentale