Validity of the relativistic impulse approximation for elastic proton-nucleus scattering at energies lower than 200 MeV
文献类型：期刊论文
| 作者 | Li, Z. P.1; Hillhouse, G. C.1,2; Meng, J.1,2,3,4 |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2008-07 |
| 卷号 | 78 |
| ISSN号 | 0556-2813 |
| DOI | 10.1103/PhysRevC.78.014603 |
| 英文摘要 | We present the first study to examine the validity of the relativistic impulse approximation (RIA) for describing elastic proton-nucleus scattering at incident laboratory kinetic energies lower than 200 MeV. For simplicity we choose a (208)Pb target, which is a spin-saturated spherical nucleus for which reliable nuclear structure models exist. Microscopic scalar and vector optical potentials are generated by folding invariant scalar and vector scattering nucleon-nucleon (NN) amplitudes, based on our recently developed relativistic meson-exchange model, with Lorentz scalar and vector densities resulting from the accurately calibrated PK1 relativistic mean field model of nuclear structure. It is seen that phenomenological Pauli blocking (PB) effects and density-dependent corrections to sigma N and omega N meson-nucleon coupling constants modify the RIA microscopic scalar and vector optical potentials so as to provide a consistent and quantitative description of all elastic scattering observables, namely, total reaction cross sections, differential cross sections, analyzing powers and spin rotation functions. In particular, the effect of PB becomes more significant at energies lower than 200 MeV, whereas phenomenological density-dependent corrections to the NN interaction also play an increasingly important role at energies lower than 100 MeV. |
| WOS关键词 | REACTION CROSS-SECTIONS ; MEAN-FIELD THEORY ; LORENTZ COVARIANT REPRESENTATION ; GROUND-STATE PROPERTIES ; NN INTERACTION ; INTERMEDIATE ENERGIES ; POLARIZED PROTONS ; OPTICAL-MODEL ; EXOTIC NUCLEI ; PB-208 |
| 资助项目 | National Research Foundation of South Africa[2054166] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000258636200039 |
| 出版者 | AMER PHYSICAL SOC |
| 源URL | [http://119.78.100.186/handle/113462/57141]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Li, Z. P. |
| 作者单位 | 1.Peking Univ, Sch Phys, Beijing 100871, Peoples R China 2.Univ Stellenbosch, Dept Phys, ZA-7600 Stellenbosch, South Africa 3.Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China 4.Natl Lab Heavy Ion Accelerator, Ctr Theory Nucl Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Z. P.,Hillhouse, G. C.,Meng, J.. Validity of the relativistic impulse approximation for elastic proton-nucleus scattering at energies lower than 200 MeV[J]. PHYSICAL REVIEW C,2008,78. |
| APA | Li, Z. P.,Hillhouse, G. C.,&Meng, J..(2008).Validity of the relativistic impulse approximation for elastic proton-nucleus scattering at energies lower than 200 MeV.PHYSICAL REVIEW C,78. |
| MLA | Li, Z. P.,et al."Validity of the relativistic impulse approximation for elastic proton-nucleus scattering at energies lower than 200 MeV".PHYSICAL REVIEW C 78(2008). |
入库方式： OAI收割
来源：近代物理研究所
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