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Delta Excitation in the Compressed Finite Nucleus ⁹⁰Zr

Journal of Applied Mathematics and Physics 2016年第3期4卷 586-593页

作者： mohammed hassen eid abu-sei’leek Department of Physics Faculty of Science Zarqa University Al-Zarqa Jordan

Constrained spherical Hartree-Fock (CSHF) calculations under radial compression are presented for 90Zr in a model space consisting of nine major oscillator shells. An effective baryon-baryon interaction which includes the Δ resonances is used. The nucleon-nucleon (N-N) interaction is Reid Soft Core (RSC) potential. The sensitivity of the results to the choice model space is examined. It is found that the nuclear system becomes more compressible when the model space is increased. The radial density and the number of Δs are decreased by increasing model space. The results suggest that the behavior of single particle energies is independent of the model space.

关键词： Nuclear Structure Compressed Finite Nuclei Δ-Resonance

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Ground State Properties of Closed Shell <sup>4</sup>He Nucleus under Compression

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Journal of Applied Mathematics and Physics 2018年第3期6卷 458-467页

作者： mohammed hassen eid abu-sei’leek Department of Physics Faculty of Science Zarqa University Al-Zarqa Jordan

This paper addresses the effects of nuclear properties at different potentials. Reid Soft Core (RSC) and Nijmegen potentials were used to study the nuclear system of 4He nucleus. It has been examined with and without large compression. Moreover, the constrained spherical Hartree-Fock (CSHF) approximations are used as a major tool of analysis. The dependence of the ground state properties was investigated to the degree of compression. It was noticed that it is possible to compress the nucleus to a smaller volume and the nucleus becomes more bounded using RSC than Nijmegen potential. It was also shown that the spectrum of single particle levels increases more rapidly for Nijmegen than RSC potential under compression. Finally, the radial density distribution remains constant, except in the interior region, while it is larger with RSC than Nijmegen potential. At large compression, the radial density distribution becomes larger than that in the interior region when RSC potential is used.

关键词： Nuclear Structure Compressed Finite Nuclei Binding Energy Single Particle Energy Radial Density

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