Abstract
Properties of the sub-state population cross sections σ M for inelastic α-nucleus scattering are explored within the deformed collective nuclear model. The interference between the nuclear and Coulomb parts of the inelastic transition potential is calculated with the DWBA. The effect on the M = −2 sub-state cross section is substantially more pronounced than that for the usual inelastic differential cross section Σ mσ m. The effect of re-orientation terms is calculated by means of a coupled channel formalism for small values of the quadrupole deformation parameter β 2. It is found to shift the angular position of the minima of the σ M relative to the DWBA result, in a way which depends on the sign of β 2. A spin orbit potential has only a small effect on the σ M. The calculations refer to 15 MeV α-particles incident on a nucleus of the size and charge of Ca.
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