2021/01/01 by Ait Ben Mennana Azzeddine, Azzeddine Ait Ben Mennana, Mostafa Oulne
Physics and Astronomy · #Atomic physics #Dipole #Giant resonance #Isotope #Isovector #Neutron #Nuclear Physics and Applications #Nuclear physics #Nuclear physics research studies #Nucleon #Physics #Quadrupole #Rare-earth and actinide compounds #Resonance (particle physics) #nucl-th
paper · pdf · doi:10.1140/epjp/s13360-020-01017-z
published as The European Physical Journal Plus volume 136, Article number: 85 (2021) · 17 pages, 22 figures. arXiv admin note: text overlap with arXiv:2005.04337
openalex publication_date 2021/01/01 · openalex created_date 2021/01/18 · arxiv created 2021/01/21 · arxiv updated 2021/01/22 · openalex updated_date 2026/08/05
In this work, we have studied the isovector giant dipole resonance (IVGDR) in even-even Sm isotopes within time-dependent Hartree-Fock (TDHF) with four Skyrme forces SLy6, SVbas, SLy5 and UNEDF1. The approach we have followed is somewhat similar to the one we did in our previous work in the region of Neodymium (Nd, Z=60) [\hrefhttps://iopscience.iop.org/article/10.1088/1402-4896/ab73d8Physica Scripta (2020)]. We have calculated the dipole strength of 128-164Sm, and compared with the available experimental data. An overall agreement between them is obtained. The dipole strength in neutron-deficient 128-142Sm and in neutron-rich 156-164Sm isotopes are predicted. Shape phase transition as well as shape coexistence in Sm isotopes are also investigated in the light of IVGDR. In addition, the correlation between the quadrupole deformation parameter β2 and the splitting ΔE/ Em of the giant dipole resonance (GDR) spectra is studied. The results confirm that ΔE/ Em is proportional to quadrupole deformation β2