A test of the fish bone optical model on?-16O scattering

The concept of a Pauli barrier in nucleus-nucleus scattering

“…At energies above 80MeV c.m. we already know from earlier calculations [14] that the Pauli effect becomes very small.…”

“…In our numerical study we consider the c~-c~ system with potential parameters given in [13] and the -160 system with parameters given in [14]. In the latter system, both shape and range of the local potential are taken over from the resonating group model in the equal width harmonic oscillator limit, with an e2/r microscopic Coulomb interaction and a microscopic strong interaction of Gaussian shape.…”

Microscopic optical potentials for composite particle scattering at low energies

“…In order to achieve a proper description of the differential elastic cross section a consistent determination of the direct (first order potential) part is required, where the combination with a Cluster approach using the techniques of the RGM or the GCM are most promising [19,20]. In addition the real part of the polarization term should also be included in future calculations.…”

Approximative treatment of the Coulomb exchange interaction of clusters

“…For the odd angular momenta t=1, 3, 5, 7, and 9, the respective first Pauli-forbidden state is 65 % forbidden, the second one is 38% and the third one is 21% Pauli-forbidden. In numerical calculations [10] it has been seen that the lowest state of the 0+-rotational band, which is the ground state Zo of 2~ has more than 99% overlap with u~ ~ For this state, (5) then reduces to…”

“…The /=0 part of the ~-160 Coulomb exchange interaction in the M-version of the fish bone optical model, in MeV. Parameters of the cluster-internal states are chosen as in the equal width case of [10]; the indices i,j refer to the norm kernel eigenstate representation i'-.< Table 5. The I=0 part of the cr Coulomb exchange interaction in the /~r-version of the fish bone optical model, in MeV.…”