摘要
运用实验的(?)N散射振幅和多次散射理论,在冲量近拟下考虑反质子能量从180MeV至1800MeV的光学势,发现此能区反质子光学势的虛部强度在130—140MeV附近。用所获得的光学势,计算^(12)C,^(26)O,^(40)Ca和^(208)pb等满壳层核在五个能量下的弹性散射微分截面。看到所用的光学势,在180MeV能很好地符合实验数值。本文还预示了此能区在各个核上的理论结果。
Using the experimental pN amplitudes and multiple scattering theory, we obtained the antiproton optical potential at incident energies from 180 to 1800MeV under the impulse approximation. It is found that the imaginary parts of the optical potential strengths are nearly constant between 120 to 140MeV. By using these optical potentials, We have the calculation results of the elastic scattering differential cross sections from the closed shell nuclei ^(12)C. ^(16)O,^(40)Ca and ^(208)pb for five kinetic energies ranging from 180 to 1800MeV. At 180MeV, the experimental data are fitted very well, and the theoretical results at higher energies are predicted.
出处
《高能物理与核物理》
SCIE
CAS
CSCD
北大核心
1993年第9期829-834,共6页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金
