Direct reactions with radioactive beams

14th Conference on Theoretical Nuclear Physics in Italy

Bonaccorso, Angela^1

INFN, Sezione di Pisa, 56127 Pisa, Italy^1

关键词: Direct reactions;    Momentum distributions;    Nuclear structure;    Radioactive beams;    Reaction mechanism;    Reaction theory;    Time-dependent perturbation theory;    Total reaction cross sections;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/527/1/012008/pdf
DOI  :  10.1088/1742-6596/527/1/012008

来源: IOP

【 摘 要 】

Since the first measurements in the 80's of total reaction cross sections from radioactive beams up to the most recent and advanced exclusive experiments for dripline unbound nuclei, our understanding of exotic nuclei has greatly evolved. This has been possible through a joint effort in the description of the reaction mechanisms and of the underlying nuclear structure. Most exotic nuclei are weakly bound due to the excess of either neutrons or protons and they breakup easily in peripheral reactions. We will discuss in this paper the mechanism responsible for nuclear and Coulomb breakup. Some open problems will be discussed in detail, such as kinematical effects on core parallel momentum distributions and the possibility and consequences that such cores be themselves weakly bound. A general framework for the reaction theory will be used, based on a time dependent perturbation theory approach. Its eikonal limit will be also mentioned.