Properties of effective interactions and the excitation of 6- states in 28Si

Details Properties of effective interactions and the excitation of 6- states in 28Si Properties of effective interactions and the excitation of 6- states in 28Si

2006-04-21

arxiv.org/abs/nucl-th/0604051v1

Nucl.Phys. A779 (2006) 82-98

Physics

Nuclear Physics

Nuclear Theory

15 pages, 10 figures

Scientific paper

10.1016/j.nuclphysa.2006.09.005

Cross-section and analyzing power data from (p,p') scattering to the 6- states at 11.58 and 14.35 MeV in 28Si, taken with energies of 80, 100, 134, and 180 MeV protons, have been analyzed using a distorted wave approximation with microscopically defined wave functions. The results, taken in conjunction with an analysis of an M6 electron scattering form factor, suggest that the two states exhaust respectively, ~50% and ~60% of the strengths of isoscalar and isovector particle-hole excitations from the ground state. The energy variation of data also suggests that the non-central components of the effective interactions at 80 and 100 MeV may need to be enhanced.

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