Low-energy nuclear reaction mechanisms are frequently classified as either direct, pre-equilibrium or compound nucleus ones. Here, the role of the first two of these is examined up to the stage of the formation of a compound nucleus. Although direct reactions are often distinguished from pre-equilibrium ones, the point of view is adopted here that the latter consist, for the most part, of a...
A nucleus is a good stage to study a many-body quantum system in nature. Excited nuclei generate a variety of vibrations, rotations, and so on, which are called nuclear collective motions. It is known that the leading-order effect of nuclear vibrational excitations is 1-particle 1-hole (1p1h) states. With increasing the excitation energy, higher-order correlations beyond 1p1h states become...
