Theory of particle and cluster emission. (Q708319)

This book has two main purposes. Firstly, the main theoretical methods describing decay processes induced by the strong interaction are reviewed. Secondly, this book clarifies some fundamental aspects connected with the microscopic \(\alpha\)-like emission theory. In the first part of the book the phenomenological theoretical framework to investigate nuclear structure, from proton emission up to the cold fission is reviewed. The main assumption is that the dynamics of emitted fragments is fully described by the potential picture. The most general method to estimate the interaction potential between emitted fragments is investigated. Significant observables characterizing emission processes from deformed nuclei are introduced. The couple channels approach for axially symmetric and triaxial nuclei with even-even or odd-mass structure is described. The coupled channels techniques like numerical integration, diagonalization method, analytic continuation method, distorted waves approach and two potential method are discussed. The semiclassical approach within the cluster model, super asymmetric fission model, effective liquid drop model and fragmentation theory is extensively analyzed. The coupling between collective excitations of emitted fragments and the relative motion in terms of the core-angular harmonics are also covered. The second part is mainly a review of the \(\alpha\)-like microscopic approaches of emission processes. Various methods to describe the emission of clusters from nuclei like time dependent approach, resonating group method, Feshbach reaction theory, R-matrix approach and multi-step shell model are discussed. A description of the \(\alpha\)-decay fine structure in vibrational nuclei within the Quasiparticle Random Phase Approximation is also given. Finally a short introduction into the Two Center Shell Model is presented.