【摘要】 发展了一个适用于计算中能区核反应总截面的修正微观模型,讨论了中子皮厚度,基态形变及与中子过剩自由度有关的核物质弥散度对核反应总截面的影响.计算结果和现有实验数据的比较表明,与中子过剩自由度有关的核物质弥散度是反应总截面随中子过剩增加而迅速增加的一个重要因素.更多还原

【Abstract】 A modified microscopic model for calculating the total reaction cross section in the intermediate energy domain is given, the effects of neutron skin, ground state deformation and surface diffusion of the nuclear matter distribution is discussed quantitatively. The experimental data and the calculated results show that the surface diffusion of the nuclear matter distribution which was assumed to be dependent on the neutron excess is a important factor for the rapid increase of the total reaction cross section induced by neutron-rich nuclei.更多还原