Analysis of Antiproton-Nucleus Elastic Scattering

Li Yangguo

Chinese Physics C> 1988, Vol. 12> Issue(S3) : 261-270

Analysis of Antiproton-Nucleus Elastic Scattering

Li Yangguo

Shantou University, Guangdong

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Abstract：
The differential cross sections of the antiproton elastic scattering on the ¹²C, ^16,18O, ⁴⁰Ca and ²⁰⁸Pb at the energies of 50 MeV and 180 MeV are calculated and analyzed by the optical potential model. It shows that the antiproton optical potential has a strong absorption property. In making optical potential best fit to the experimental data, it is found that the diffuseness parameters can vary only in a narrow region and increase with heavier nuclei. The real part of the optical potential is very shallow. The absorption coefficients approach to zero inside the target nucleus. Thus, the elastic scattering takes place at the surface region of a nucleus.

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Li Yangguo. Analysis of Antiproton-Nucleus Elastic Scattering[J]. Chinese Physics C, 1988, 12(S3): 261-270.

Li Yangguo. Analysis of Antiproton-Nucleus Elastic Scattering[J]. Chinese Physics C, 1988, 12(S3): 261-270. shu

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Received: 1987-04-20

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Supported by the National Natural Science Foundation of China

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沈阳化工大学材料科学与工程学院沈阳 110142

Analysis of Antiproton-Nucleus Elastic Scattering

Li Yangguo

Shantou University, Guangdong

Received Date: 1987-04-20

Fund Project: Supported by the National Natural Science Foundation of China

Abstract: The differential cross sections of the antiproton elastic scattering on the ¹²C, ^16,18O, ⁴⁰Ca and ²⁰⁸Pb at the energies of 50 MeV and 180 MeV are calculated and analyzed by the optical potential model. It shows that the antiproton optical potential has a strong absorption property. In making optical potential best fit to the experimental data, it is found that the diffuseness parameters can vary only in a narrow region and increase with heavier nuclei. The real part of the optical potential is very shallow. The absorption coefficients approach to zero inside the target nucleus. Thus, the elastic scattering takes place at the surface region of a nucleus.