A potential for alpha-particle-nucleus scattering

8Be +14C break-up of22Ne

“…It is interesting to compare the states in the present work, which are proposed to possess a 14 C + 2α structure, with those in 20 Ne listed in table 1. Cluster resonances can be described in the framework of a potential model with a surface well and a hard core [15]. In such a model, there is a strong repulsion of the constituent nuclei at small distances.…”

Elastic scattering of heavy ions and a modified liquid drop model

“…Similarly as in the case of the NOSE, the philosophy of the ESP is such that the optical potential is presumed to provide an adequate description for the "normal" case, i.e., da/ds'-2 for forward angles, while the additional phenomenological repulsion V r is adjusted to experiment to account for the quasimolecular effects associated with ALAS (anomalous large angle scattering). In line with earlier investigations [5,6] we now focus our attention on the elastic scattering of ~ particles and heavy ions where ALAS is observed. In previous discussions we approximated the nonlinearity only by phenomenological potentials; the present note contains the last check to be performed before solving the NOSE numerically.…”

“…(8), we perform now the integration leading to (6). Concentrating on a quarter of the compressed region, e.g., the marked area in the lower half of Fig.…”

“…C=K/9 is the compressibility modulus of finite nuclear matter. The restoring force due to the nonlinearity of (1) may be viewed as the counterpart to the repulsive potential, Vr, appearing e.g., in the phenomenological effective surface potential (ESP) [6], VFsp= ~M+ g, I2)…”

On absolute values of ?-widths for heavy spherical nuclei

“…The reason for this small value of K c can be linked with the fact that the function Oco must not have the components, which the ~b~-factor has. Because of this the effective potential V~ for the function f2c ~ can probably have the effective repulsive core in the shell-model region of heavy nuclei, which was predicted in [8,33]. In Ref.…”