Single-Particle Vibrational Input States in Interactions between Neutrons and Nuclei
The intermediate state or input state model, which was proposed by Block and Feshbach  has been extensively discussed in recent years [2–5]. This model is of particular interest because at the present time rather comprehensive data has been accumulated which points to the inadequacy of the optical model, the direct-interaction model, and the statistical model for providing a theoretical description of nuclear reactions. There is reason to hope that the concept of intermediate states, which is a very general approach and could qualitatively explain a number of experimental results, will make it possible to describe various nuclear processes from a unified viewpoint, and will become a useful tool for research on the structure of complex nuclei.
KeywordsIntermediate State Input State Compound Nucleus Capture Cross Section Force Function
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