2010/08/09 by Kenichi Yoshida, Takashi Nakatsukasa · 3 citations
Chemistry · Physics and Astronomy · #Atomic and Molecular Physics #Atomic physics #Chemistry #Dipole #Isotope #Materials science #Nuclear physics #Nuclear physics research studies #Physics #Quantum mechanics #Rare-earth and actinide compounds #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.83.021304
published as Phys.Rev.C83:021304,2011 · 5 pages including 6 figures
arxiv created 2010/08/09 · openalex publication_date 2011/02/18 · arxiv updated 2011/02/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Photoabsorption cross sections of Nd and Sm isotopes from spherical to deformed even nuclei are systematically investigated by means of the quasiparticle-random-phase approximation based on the Hartree-Fock-Bogoliubov ground states using the Skyrme energy density functional. The gradual onset of deformation in the ground states as the neutron number increases leads to characteristic features of the shape phase transition. The calculations well reproduce the isotopic dependence of broadening and the emergence of a double-peak structure in the cross sections without any adjustable parameter. We also find that the deformation plays a significant role for low-energy dipole strengths. The E1 strengths are fragmented and considerably lowered in energy. The summed E1 strength up to 10 MeV is enhanced by a factor of 5 or more.