Investigation of electrical and magnetical multipoles contributions to the total longitudinal and transverse form factors in some positive and negative 27Al states using different interactions
Journal of University of Anbar for Pure Science,
2022, Volume 16, Issue 1, Pages 42-49
AbstractThe shell model and Skyrme interaction calculations were used to study the nuclear structure of the 27Al nucleus. In particular, inelastic electron scattering form factors, energy levels, and transition probabilities for positive and some negative parity low energy states have been calculated. The sd shell model was used with SKX parameters for positive parity cases. The calculations were performed on sd space interactions and the best results were obtained from HBUMSD, HBUSD, CWH, PW, and W interactions. For negative parity cases, the zbm model space with SKXcsb parameters has been used with zwm interactions. The excitation energies and transitions probabilities to the ground state 5/2+ for positive parity states have been also calculated. The calculated form factors, energy level diagrams, and transition probabilities were compared with the available experimental data. It was confirmed that the Skyrme interaction is suitable with the shell model to study the nuclear structure.
 B. Brown, W. Chung, B. Wildenthal, Electromagnetic multipole moments of ground states of stable odd-mass nuclei in the sd shell, Physical Review C, 22 (1980) 774.
 P. Ryan, R. Hicks, A. Hotta, J. Dubach, G. Peterson, D. Webb, Electroexcitation of even-parity states in Al 27, Physical Review C, 27 (1983) 2515.
 B. Brown, B. Wildenthal, C. Williamson, F. Rad, S. Kowalski, H. Crannell, J. O’Brien, Shell-model analysis of high-resolution data for elastic and inelastic electron scattering on F 19, Physical Review C, 32 (1985) 1127.
 R. Radhi, Nuclear structure study with inelastic electron scattering from 27Al, Nuclear physics A, 707 (2002) 56-64.
 R. Radhi, N. Khalaf, A. Najim, Elastic magnetic electron scattering from 17O, 25Mg and 27Al, Nuclear Physics A, 724 (2003) 333-344.
 K. Amos, C. Steward, Large basis space effects in electron scattering form factors of light nuclei, Physical Review C, 41 (1990) 335.
 K.S. Jassim, A.A. Al-Sammarrae, F.I. Sharrad, H.A. Kassim, Elastic and inelastic electron-nucleus scattering form factors of some light nuclei: Na 23, Mg 25, Al 27, and Ca 41, Physical Review C, 89 (2014) 014304.
 R. Radhi, A.A. Alzubadi, E.M. Rashed, Shell model calculations of inelastic electron scattering for positive and negative parity states in 19F, Nuclear Physics A, 947 (2016) 12-25.
 A.A. Alzubadi, R. Radhi, N.S. Manie, Shell model and Hartree-Fock calculations of longitudinal and transverse electroexcitation of positive and negative parity states in O 17, Physical Review C, 97 (2018) 024316.
 D. Vautherin, D.t. Brink, Hartree-Fock calculations with Skyrme's interaction. I. Spherical nuclei, Physical Review C, 5 (1972) 626.
 B.A. Brown, Synthesis of mean-field and shell-model configuration-mixing methods, Riken Review, DOI (2000) 53-57.
 P.B.a.P. Glaudemans, Shell-Model Applications in Nuclear Spectroscopy, , North-Holland, Amsterdam and New York1979.
 T. de Forest Jr, J.D. Walecka, Electron scattering and nuclear structure, Advances in Physics, 15 (1966) 1-109.
 H. Sagawa, B. Brown, O. Scholten, Shell-model calculations with a Skyrme-type effective interaction, Physics Letters B, 159 (1985) 228-232.
 B. Brown, W. Richter, R. Lindsay, Displacement energies with the Skyrme Hartree–Fock method, Physics Letters B, 483 (2000) 49-54.
 J. Negele, D. Vautherin, Density-matrix expansion for an effective nuclear hamiltonian, Physical Review C, 5 (1972) 1472.
 R.P. Singhal, A. Johnston, W.A. Gillespie, E.W. Lees, Inelastic scattering of electrons from 27Al, Nuclear Physics A, 279 (1977) 29-44.
 J.W. Maas, A.J.C.D. Holvast, A. Baghus, H.J.M. Aarts, P.M. Endt, Bound states of 27Al studied at selected 26Mg(p, γ)27Al resonances, Nuclear Physics A, 301 (1978) 237-257.
 R.S. Hicks, A. Hotta, J.B. Flanz, H. deVries, Electroexcitation of odd-parity states in 27Al, Physical Review C, 21 (1980) 2177-2189.
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