Abstract
This is a review of the basic mechanisms leading to high energy breakup reactions, of the formalisms used to describe them and of some of the methods to obtain the optical potentials necessary in calculations involving exotic nuclei. Semiclassical reductions of the DWBA approximation for inclusive and exclusive breakup will be presented. The observables that can be calculated are projectile’s core parallel momentum distributions, angular distributions of nucleons from the breakup, total breakup cross sections. Methods to study resonances at threshold in unbound nuclei are also introduced. In this case the exclusive observable calculated is the neutron-core relative energy spectrum. Finally, we study the two neutron transfer to the continuum reaction between two “normal” nuclei. The observable is the continuum excitation energy spectrum of the “exotic” residual nucleus created.
Highlights
Exotic nuclei are located away from the stability valley and have large differences in the number of neutrons and protons
This is a review of the basic mechanisms leading to high energy breakup reactions, of the formalisms used to describe them and of some of the methods to obtain the optical potentials necessary in calculations involving exotic nuclei
Tanihata [2] used the optical limit of Glauber model and in particular the strong absorption model of the total reaction cross section
Summary
Exotic nuclei are located away from the stability valley and have large differences in the number of neutrons and protons. On the other hand the advance in technical developments makes it possible at present the creation and study of beams of heavier nuclei with very asymmetric neutron and proton numbers, in which neutrons are deeply bound while protons are weakly bound or the other way around In his first attempt to describe quantitatively reaction cross sections and breakup of exotic nuclei, I. Tanihata [2] used the optical limit of Glauber model and in particular the strong absorption model of the total reaction cross section This well known geometrical model supposes that the interaction between two heavy nuclei at intermediate to high energy can be described by just one parameter, the strong absorption radius Rs which is the distance at which the probability of elastic scattering between two nuclei is reduced by 50%. For each of them a description will follow of the most recent advances in the models used for theoretical calculations
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
