Recent developments in heavy-ion fusion reactions around the Coulomb barrier

K. Hagino, N. Rowley, J. M. Yao

Research output: Contribution to journalConference article

Abstract

The nuclear fusion is a reaction to form a compound nucleus. It plays an important role in several circumstances in nuclear physics as well as in nuclear astrophysics, such as synthesis of superheavy elements and nucleosynthesis in stars. Here we discuss two recent theoretical developments in heavy-ion fusion reactions at energies around the Coulomb barrier. The first topic is a generalization of the Wong formula for fusion cross sections in a single-channel problem. By introducing an energy dependence to the barrier parameters, we show that the generalized formula leads to results practically indistinguishable from a full quantal calculation, even for light symmetric systems such as 12C+12C, for which fusion cross sections show an oscillatory behavior. We then discuss a semi-microscopic modeling of heavy-ion fusion reactions, which combine the coupled-channels approach to the state-of-the-art nuclear structure calculations for low-lying collective motions. We apply this method to subbarrier fusion reactions of 58Ni+58Ni and 40Ca+58Ni systems, and discuss the role of anharmonicity of the low-lying vibrational motions.

Original languageEnglish
Article number07002
JournalEPJ Web of Conferences
Volume122
DOIs
Publication statusPublished - 2016 Jun 21
Event5th International Workshop on Compound-Nuclear Reactions and Related Topics, CNR 2015 - Tokyo, Japan
Duration: 2015 Oct 192015 Oct 23

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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