Reveal the dynamics of three-body decay
ORAL · Invited
Abstract
Exotic decay occurs beyond the dripline of the nuclear landscape. Among these decays, two-proton (2p) radioactivity is a unique three-body process that involves the emission of two protons from the ground state of even-Z neutron-deficient nuclei. Such exotic decay is of particular interest as it provides invaluable information on nucleon-nucleon correlation. The interplay between inner structure and final-state interaction can also help us gain deep insight into the universal properties of open quantum systems. To study the mechanism of three-body decay, we developed a time-dependent approach that allows us to probe emitted nucleons at long times and large distances. We demonstrated that the time evolution of the two-nucleon wave function is strongly impacted by the diproton/dineutron dynamics. The correlations between emitted nucleons provide invaluable information on the dinucleon structure in the initial state.
*This material is based upon work supported by the National Key Research and Development Program (MOST 2022YFA1602303); the National Natural Science Foundation of China under Contract No.12147101; the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under award numbers DE-SC0013365 (Michigan State University), DE-SC0009883 (Florida State University), and DE-SC0023175 (NUCLEI SciDAC-5 collaboration).
–
Publication: [1] S. M. Wang and W. Nazarewicz, Fermion pair dynamics in open quantum systems, Phys. Rev. Lett. 126, 142501 (2021).
[2] S. M. Wang, W. Nazarewicz, A. Volya, and Y. G. Ma, Probing the non-exponential decay regime in open quantum systems, Phys. Rev. Research 5, 023183 (2023).
Presenters
-
Simin Wang
- Fudan Univ