超重核合成截面计算中几个问题的探讨

Approach Synthesis of Superheavy Nuclei from Some Aspects of Cross Section Calculations

摘要: 讨论了超重核形成截面计算中的耦合道效应、壳效应的阻尼效应、能级密度的集体运动增强因子以及蒸发残余核的自旋分布等几个重要问题,并给出相应的实验结果.因这些因素都可能对截面有数量级的影响,正确处理与否直接关系到超重核合成截面理论预言的可靠性. .Several important aspects in the cross section calculations for the synthesis of superheavy nuclei have been inquired. They are the effects of the coupledchannels, the damping of shell correction energy, the collective enhancements in the level density and the spin distributions of evaporation residues. The channel coupling of relative motion with internal degrees of freedom will enhance significantly the capture cross section at subbarrier energies. However, recent measurements of spin distributions for ...

Abstract: Several important aspects in the cross section calculations for the synthesis of superheavy nuclei have been inquired. They are the effects of the coupledchannels, the damping of shell correction energy, the collective enhancements in the level density and the spin distributions of evaporation residues. The channel coupling of relative motion with internal degrees of freedom will enhance significantly the capture cross section at subbarrier energies. However, recent measurements of spin distributions for ...