Nuclear matter and surface clustering

10th International Conference on Clustering Aspects of Nuclear Structure and Dynamics

Usmani, Q.N.^1 ; Abdullah, N.^1 ; Anwar, K.^1 ; Sauli, Z.^2

Institute of Engineering Mathematics, University Malaysia Perlis, Malaysia^1

School of Microelectronics Engineering, University Malaysia Perlis, Malaysia^2

关键词: Asymmetric nuclear matter;    Density approaches;    Energy data;    Equation of state;    Extended versions;    Nuclear matters;    Saturation density;    Thomas-Fermi;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/436/1/012066/pdf
DOI  :  10.1088/1742-6596/436/1/012066

来源: IOP

【 摘 要 】

We demonstrate that the binding energy per nucleon of symmetric nuclear matter (SNM) (with Coulomb interaction switched off and N Z) in the limit of zero density approaches to its value, uv, at the saturation density, where uvis the volume term of the Weizsacker mass formula. This phenomenon is a direct result of the clustering of nuclei in the low density region of nuclear matter. We study the implications of this result on the properties of nuclei. We also study the properties of asymmetric nuclear matter. Because of clustering a provocative interpretation of the equation of state of asymmetric nuclear matter emerges which is at considerable variance at low densities with hitherto all the previous calculations. For nuclei, as a framework, an extended version of Thomas-Fermi theory is invoked. Calculations are performed for 2149 nuclei with N, Z ≥ 8. The present scheme leads to a forceful interpretation of the low density asymmetry energy data of Natowitz et al. [1].