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从基本的Dirac-Brueckner-Hartree-Fock微观理论出发,得到同时包含实部和虚部的核子-核散射的微观光学势,并利用折叠模型直接获得了核-核散射参数无关的整体微观光学势.考虑到核-核散射去弹过程高级项的贡献和6Li的碎裂效应,在微观光学势的实部和虚部中引入了修正因子NR,NI.系统研究了入射粒子6Li与靶核12C,28Si,40Ca,58Ni,90Zr和208Pb散射的微观光学势,计算中虚部增强因子取NI≈3.0,而实部修正因子NR对于给定的碰撞系统几乎是一个常数.理论很好地再现了所有被研究靶核和入射能量的弹性散射实验数据.参数无关的微观理论对核-核散射,尤其是对不稳定核-核系统反应的描述是有价值的.
Based on the basic Dirac-Brueckner-Hartree-Fock microscopic theory, the micro-optical potential of the nucleon-nucleus scattering, which contains both real and imaginary parts, is obtained. The global micro-optical potential In view of the contribution of the advanced term of nuclear-nuclear scattering and the fragmentation effect of 6Li, the correction factors NR and NI were introduced into the real part and the imaginary part of the micro-optical potential, and the interaction between incident particle 6Li and target nucleus 12C , 28Si, 40Ca, 58Ni, 90Zr and 208Pb scattering, the imaginary part of the enhancement factor in the calculation of NI ≈ 3.0, and the real part of the correction factor NR for a given collision system is almost a constant. Theory well reproduced Elastic scattering experiment data for all studied target and incident energies Parameter-independent microscopic theory is valuable for describing nuclear-nuclear scattering, especially for unstable nuclear-nuclear reactions.