Elsevier

Nuclear Physics A

Volume 243, Issue 3, 26 May 1975, Pages 365-379
Nuclear Physics A

Neutron transfer into resonant states

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Abstract

The description of neutron stripping into resonant states as off-shell scattering and the connection of the differential transfer cross section with the total neutron cross section for the same target is formulated including distortion in the initial and final channels, and interference with the coherent, non-resonating proton transfer. The experimentally observed strong dependence of the ratio of these two cross sections in resonance on the transferred orbital angular monumentum is quantitatively explained by three effects: the off-shell behaviour of the neutron scattering amplitude, the absorption in the distorting optical potentials, and the influence of interference with non-resonant processes. At low excitation energies of the resonances, the overriding effect is the off-shell behaviour of the neutron scattering amplitude, leading to strong enhancement of the stripping cross section relative to the neutron cross section.

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