J. Button

Isoscalar giant resonances in Ca 48

The giant resonance region from 9.5 MeV < E{sub x} < 40 MeV in {sup 48}Ca has been studied with inelastic scattering of 240-MeV {alpha} particles at small angles, including 0 deg. 95{sub -15}{sup +11}% of E0 energy-weighted sum rule (EWSR), 83{sub -16}{sup +10}% of E2 EWSR, and 137 {+-} 20% of E1 EWSR were located below E{sub x}=40 MeV. A comparison of the experimental data with calculated results for the isoscalar giant monopole resonance, obtained within the mean-field-based random-phase approximation, is also given.

Elastic and inelastic scattering of 240-MeV (6)Li ions from (40)Ca and (48)Ca and tests of a systematic optical potential

Elastic and inelastic scattering of 240-MeV {sup 6}Li particles from {sup 40}Ca and {sup 48}Ca were measured with the multipole-dipole-multipole spectrometer from 4 deg. <=theta{sub c.m.}<=40 deg. Optical potential parameters were obtained by fitting the elastic-scattering data with the double-folding model using the density-dependent M3Y NN effective interaction and B(E2) and B(E3) values obtained for low-lying 2{sup +} and 3{sup -} states agreed with the adopted values. The results are compared with those obtained using potentials derived from the systematics of potentials previously obtained for {sup 24}Mg, {sup 28}Si, {sup 58}Ni, and {sup 90}Zr. Cross sections for excitation of giant resonances were also calculated with the potentials obtained.

Elastic and inelastic scattering to low-lying states of {sup 58}Ni and {sup 90}Zr using 240-MeV {sup 6}Li

Elastic and inelastic scattering of 240-MeV 6 Li particles from 58 Ni and 90 Zr were measured with the multipole-dipole-multipole spectrometer from 4° ≤ θ c.m. ≤ 43°. The elastic scattering data were fitted with the double-folding model using the density-dependent M3Y NN effective interaction and with a phenomenological Woods-Saxon potential. B(E2) and B(E3) values obtained for low-lying 2 + and 3- states with the double-folding calculations agreed with the adopted values.