Excitation of Collective States in Light Nuclei by Inelastic Scattering of 20.3-MeV Polarized Protons

Effective interactions and the40Ca(p, p′) reaction

“…These fits to the data are comparable to those obtained with a Yukawa interaction which fits low-energy nucleon-nucleon scattering [5] or with the Kallio-Koltveit interaction [4], although both give cross sections which are larger by about a factor of 2 than does the HL Fig. 5 shows the results using the renormalized densities at 17, 20, and 25 MeV, compared to the data [20][21][22]. The fits here are comparable, but appear to deteriorate as the energy is lowered.…”

“…We have not made an exhaustive study of spin-dependent effects, consequently we do not examine polarization data [21,22]. Further, we expect the relative importance of the S= 1 amplitudes to be reduced by the collective coherence effects for the two states we consider and this was borne out by the results described in Section 5 above.…”

Excitation of the Ground-State Rotational Band in 28Si by Inelastic Scattering of 25.25 MeV Polarized Protons

“…successful for collective 2+ or 3 states for several nuclei in the £ 712 , the g 912 , and the s-d shells (Glashausser et al 1967(Glashausser et al , 1968Baugh et al 1967;Fricke et al 1967;Lewis et al• 1967. These distorted~wave Born approxication (DWBA) analyses with collectivemodel form factors provided reasonable agreement with the analysing powers only when the fo~ factor included terms resulting from deforming the complete optical poter..tial, i.e.…”

“…For simplicity, the spin-orbit fort:\ factor used was essentially phenomenological (Fricke et al 1967;Blair et al 1970). Later, Sherif and Blair introduced the "full Thomas" form of the spin-orbit potential in the mmA collective-model fornalism (Sherif and Blair 1968).…”

Spin-orbit deformation in the inelastic scattering of polarized protons from12C and16O

“…Good agreement between the CC calculations using optical model parameters from Table 1 and the cross section and analyzing power data [4,[10][11][12][13] has been obtained by varying the spin-orbit deformation strength. Figures 1, 2 and 3 show the best agreement between these analyzing power data and the calculations.…”