Scaling functions and superscaling in medium and heavy nuclei
| Autor: | Pedro Sarriguren, Anton Nikolaev Antonov, M. K. Gaidarov, J. M. Udías, M. V. Ivanov, E. Moya de Guerra |
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| Rok vydání: | 2006 |
| Předmět: |
Physics
Nuclear and High Energy Physics Proton Nuclear Theory Zero (complex analysis) Charge density FOS: Physical sciences Function (mathematics) [PACS] Nucleon distributions and halo features [PACS] Inelastic electron scattering to continuum Nuclear physics Nuclear Theory (nucl-th) [PACS] Nuclear structure models and methods [PACS] Charge distribution Neutron Atomic physics Fermi gas Nuclear Experiment Scaling Electron scattering |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | The scaling function $f(\psi')$ for medium and heavy nuclei with $Z\neq N$ for which the proton and neutron densities are not similar is constructed within the coherent density fluctuation model (CDFM) as a sum of the proton and neutron scaling functions. The latter are calculated in the cases of $^{62}$Ni, $^{82}$Kr, $^{118}$Sn, and $^{197}$Au nuclei on the basis of the corresponding proton and neutron density distributions which are obtained in deformed self-consistent mean-field Skyrme HF+BCS method. The results are in a reasonable agreement with the empirical data from the inclusive electron scattering from nuclei showing superscaling for negative values of $\psi'$, including those smaller than -1. This is an improvement over the relativistic Fermi gas (RFG) model predictions where $f(\psi')$ becomes abruptly zero for $\psi'\leq -1$. It is also an improvement over the CDFM calculations made in the past for nuclei with $Z\neq N$ assuming that the neutron density is equal to the proton one and using only the phenomenological charge density. Comment: 4 pages, 1 figure, ReVTeX, accepted for publication in Phys. Rev. C |
| Databáze: | OpenAIRE |
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