Calculations of absorption cross sections using a microscopic first-order optical potential for heavy-ion scattering are compared with experiments. In-medium nucleon-nucleon (NN) cross sections were used to calculate the two-body scattering amplitude. A medium-modified first-order optical potential was obtained for heavy-ion scattering using the in-medium two-body scattering amplitude. A partial wave expansion of the Lippmann-Schwinger equation in momentum space was used to calculate the absorption cross sections for various systems. The results are presented for the absorption cross sections for 4He-nucleus and 12C-nucleus scattering systems and are compared with the experimental values in the energy range 18-83A MeV. The use of the in-medium NN cross sections is found to result in significant reduction of the free space absorption cross sections in agreement with experiment.

中文翻译：

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4He，12C核吸收截面的显微光学模型计算。

使用微观一阶光学势用于重离子散射的吸收截面计算与实验进行了比较。使用中等核仁-核仁（NN）横截面来计算两体散射幅度。使用中型两体散射振幅，获得了用于重离子散射的中等修饰的一级光学势。Lippmann-Schwinger方程在动量空间中的部分波展开用于计算各种系统的吸收截面。给出了4He核和12C核散射系统吸收截面的结果，并与18-83A MeV能量范围内的实验值进行了比较。