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Li, Z. P.; Hillhouse, G. C.; Meng, J.; Li, ZP , Peking Univ, Sch Phys, Beijing 100871, Peoples R China
Validity of the relativistic impulse approximation for elastic proton-nucleus scattering at energies lower than 200 MeV
Source PublicationPHYSICAL REVIEW C
KeywordReaction Cross-sections Mean-field Theory Lorentz Covariant Representation Ground-state Properties Nn Interaction Intermediate Energies Polarized Protons Optical-model Exotic Nuclei Pb-208
AbstractWe 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.
2008
ISSN0556-2813
Volume78Issue:1Pages:-
Subject AreaPhysics
Indexed BySCI
Funding OrganizationMajor State Basic Research Developing Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; National Research Foundation of South Africa[2054166] ; Major State Basic Research Developing Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; National Research Foundation of South Africa[2054166] ; Major State Basic Research Developing Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; National Research Foundation of South Africa[2054166] ; Major State Basic Research Developing Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; National Research Foundation of South Africa[2054166]
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5510
Collection理论物理所科研产出_SCI论文
Corresponding AuthorLi, ZP , Peking Univ, Sch Phys, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Li, Z. P.,Hillhouse, G. C.,Meng, J.,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 Li, Z. P.,Hillhouse, G. C.,Meng, J.,&Li, ZP , Peking Univ, Sch Phys, Beijing 100871, Peoples R China.(2008).Validity of the relativistic impulse approximation for elastic proton-nucleus scattering at energies lower than 200 MeV.PHYSICAL REVIEW C,78(1),-.
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 78.1(2008):-.
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