光学势在核中的吸收系数趋于零，因此弹性散射主要发生在核的表面。
The absorption coefficients approach to zero inside the target nucleus, so that the elastic scattering takes place at the surface region of nucleus.
从多次散射的理论框架，获得反质子的光学势，这一光学势能很好地描述从轻核至重核在整个能区的弹性散射实验。
From the framework of the multiple scattering theory, we obtain the antiproton-nucleus optical potential that can best describe the experimental elastic scattering data.
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