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 | Meng, J.; Li, ZP , Peking Univ, Sch Phys, Beijing 100871, Peoples R China; Hillhouse, G. C.; Li, Z. P. |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2008 |
| 卷号 | 78期号:1页码:- |
| 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 |
| ISSN号 | 0556-2813 |
| 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. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000258636200039 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5510]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Li, ZP , Peking Univ, Sch Phys, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Meng, J.,Li, ZP , Peking Univ, Sch Phys, Beijing 100871, Peoples R China,Hillhouse, G. C.,et al. Validity of the relativistic impulse approximation for elastic proton-nucleus scattering at energies lower than 200 MeV[J]. PHYSICAL REVIEW C,2008,78(1):-. |
| APA | Meng, J.,Li, ZP , Peking Univ, Sch Phys, Beijing 100871, Peoples R China,Hillhouse, G. C.,&Li, Z. P..(2008).Validity of the relativistic impulse approximation for elastic proton-nucleus scattering at energies lower than 200 MeV.PHYSICAL REVIEW C,78(1),-. |
| MLA | Meng, J.,et al."Validity of the relativistic impulse approximation for elastic proton-nucleus scattering at energies lower than 200 MeV".PHYSICAL REVIEW C 78.1(2008):-. |
入库方式： OAI收割
来源：理论物理研究所
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