Alpha clustering and nuclear molecules in8Be, 12C, 16O, 20Ne, 24Mg, and32S

11th International Conference on Clustering Aspects of Nuclear Structure and Dynamics

Royer, G.^1 ; Eudes, P.^1

Subatech, Université-IN2P3, CNRS-Ecole des Mines, Nantes

44307, France^1

关键词: Alpha emissions;    Linear chain;    Liquid drop model;    Planar configurations;    Potential barriers;    Square pyramid;    Ternary reactions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/863/1/012012/pdf
DOI  :  10.1088/1742-6596/863/1/012012

来源: IOP

【 摘 要 】

Within a liquid drop model the energy of the12C,16O,20Ne,24Mg and32S 4n-nuclei has been calculated within different configurations of α-molecules : linear chain, triangle, square, tetrahedron, pentagon, trigonal bipyramid, square pyramid, hexagon, octahedron, octagon and cube. The potential barriers governing the decay and entrance channels via α emission or absorption as well as the potential barriers of other possible binary and ternary reactions have been compared. The rms radii of the linear chains do not correspond to the experimental rms radii of the ground states. The binding energies of the three-dimensional molecules at the nascent point of the fragments are higher than the ones of the planar configurations. The A-4 daughter plus α particle configurations have always the lowest potential energy.