In search of a broader microscopic underpinning of the potential energy surface in heavy deformed nuclei

40th Symposium on Nuclear Physics 2017

Hess, P.O.^1 ; Ermamatov, M.^2,3

Instituto de Ciencias Nucleares, UNAM, Circuito Exterior, C.U., A.P. 70-543, México D.F.

04510, Mexico^1

Instituto de Fisica, Universidade Federal Fluminense, Niteroi, Rio de Janeiro

24210-340, Brazil^2

Theoretical Physics Department, National University of Uzbekistan, Tashkent, Uzbekistan^3

关键词: Deformed nuclei;    Driving forces;    Ground-state band;    Heavy nucleus;    Irreducible representations;    Mass parameter;    Pauli exclusion principle;    Relative positions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/876/1/012012/pdf
DOI  :  10.1088/1742-6596/876/1/012012

来源: IOP

【 摘 要 】

Starting from the content of the shell model space and using a simple symplectic as a weight Hamiltonian, the relative positions of different symplectic irreducible representations are deduced. Applying a geometrical mapping leads to a microscopically derived Potential-Energy-Surface. After smoothing this surface and fitting a mass parameter to the first excited 6+-state in the ground state band, the spectrum of a nucleus can be reproduced qualitatively. The method is also used to obtain a first estimation of the quadrupole Potential Energy Surface of any nucleus, allowing to obtain information about the structure of the nucleus in question. Of special interest is the prediction of the structure of nuclei away from the valley of stability and of super-heavy nuclei. The method will be illustrated at184W. One objective is to show that the Pauli Exclusion Principle is the main driving force for the structure of a nucleus, though some further microscopic input has to be used.