Fadhil I. Sharrad

Low-lying states of 184W and 184Os nuclei

The energy levels, transition energy, B （E2） values,intrinsic quadrupole moment Q0 and potential energy surface for even-even 184W and 184Os nuclei were calculated using IBM-1. The predicted energy levels, transition energy, B（E2） values and intrinsic quadrupole moment Q0 results are reasonably consistent with the experimental data. A contour plot of the potential energy surfaces shows that two interesting nuclei are deformed and have rotational characters.

Energy levels and electromagnetic transition of 190–196Pt nuclei

A description of the even–even Pt isotopes for A = 190 to 196 in the framework of the Interacting Boson Model (IBM-1) is carried out. Energy levels, B(E2) and B(M1) values, branching ratios, E2/M1 mixing ratios and QJ values of the above nuclei have been calculated. The energy levels, B(E2) values and the electric quadrupole moment QJ results are reasonably consistent with the experimental data. The magnetic dipole is compared with the available experimental data. Furthermore, the calculated results are better than previous studies.

Correspondence between phenomenological and IBM-1 models of even isotopes of Yb

Energy levels and the reduced probability of E2– transitions for ytterbium isotopes with proton number Z = 70 and neutron numbers between 100 and 106 have been calculated through phenomenological (PhM) and interacting boson (IBM-1) models. The predicted low-lying levels (energies, spins and parities) and the reduced probability for E2– transitions results are reasonably consistent with the available experimental data. The predicted low-lying levels (gr–, β1– and γ1– band) produced in the PhM are in good agreement with the experimental data compared with those by IBM-1 for all nuclei of interest. In addition, the phenomenological model was successful in predicting the β2–, β3–, β4–, γ2– and 1+ – band while it was a failure with IBM-1. Also, the 3+– band is predicted by the IBM-1 model for 172Yb and 174Yb nuclei. All calculations are compared with the available experimental data.

Elastic Electron Scattering from Some Light Nuclei

The effects of the two-body short range correlation (SRC) and the occupation probability (�) of higher states on the elastic electron scattering longitudinal form factors F(q) are investigated. Considering the effect of higher occupation probabilities and the effect of SRCs is important in getting a good agreement between the calculated elastic longitudinal electron scattering F(q)s and those of the experimental data for 4 He, 12 C, 16 O, 28 Si, 32 S, and 40 Ca nuclei.

Deformation properties of the even–even rare-earth Er–Os isotopes for N = 100

The energies of the ground, β and γ bands as well as the associated B(E2) values have been calculated using interacting boson model (IBM). We have developed a new method called “new empirical equat...

Inelastic electric and magnetic electron scattering form factors of 24Mg nucleus: Role of g factors

The electric and magnetic transitions in the 24Mg nucleus are studied based on the calculations of the longitudinal and the transverse electron scattering form factors. The universal sd-shell model Hamiltonian (USDA) is used for calculations. The wave functions of radial single-particle matrix elements are calculated using the Skyrme potential. For the longitudinal form factors, a good agreement is obtained between the calculations and the experimental data. For the transverse form factors, the effective g factors are made as adjustable parameters in order to describe the experimental data.

Descriptive study of the 122Xe and 123Xe isotopes using the IBM-1 and IBFM-1

In this work, the positive parity low-spin states for 122Xe and 123Xe have been investigated using the interacting boson mode-l and the interacting boson-fermion mode-l, respectively. The energy levels and reduced transition probabilities B(E2) have been calculated. The theoretical results are compared with the experimental data. It is in good agreement with the experimental data. The contour plot of the potential energy surface shows that the 122Xe nucleus is deformed and has γ-unstable-like characters.

Calculation of inelastic electron–nucleus scattering form factors of 29Si

Inelastic electron scattering form factors for 29Si nucleus with total angular momentum and positive parity (Jπ) and excited energy (3/2+, 1.273 MeV; 5/2+, 2.028 MeV; 3/2+, 2.425 MeV and 7/2+, 4.079 MeV) have been calculated using higher energy configurations outside the sd-shell. The calculations of inelastic form factors up to the first- and second-order with and without core-polarization (CP) effects were compared with the available experimental data. The calculations of inelastic electron scattering form factors up to the first-order with CP effects are in agreement with the experimental data, excepted for states 3/2+(1.273 MeV) and 5/2+(2.028 MeV) and without this effect are failed for all states. Furthermore, the calculations of inelastic electron scattering form factors up to the second-order with CP effects are in agreement with the experimental data for 3/2+(1.273 MeV) and 5/2+(2.028 MeV).

Binding energy and B(E2;41+→21+) calculations for nuclei with A=20

Binding energy of the ground state, energy levels and the reduced probability for E2 transitions for O, F, Ne, Na and Mg nuclei with mass number A=20 and nucleon numbers between 8 and 12 have been calculated through shell model calculations using the shell model code OXBASH for Windows by employing the usdapn interaction for neutron and proton particles orbits in sd-shell. The binding energies calculations are in good agreement with experimental data. The predicted low-lying levels (energies, spins and parities) and the reduced probability for E2 transitions results are reasonably consistent with the available experimental data.