2024/06/23 by J. Zhao, Zhao, Jie · 1 citation
Materials Science · Physics and Astronomy · #Astro and Planetary Science #FOS: Physical sciences #Nuclear Materials and Properties #Nuclear Theory (nucl-th) #Nuclear physics research studies
paper · pdf · doi:10.48550/arxiv.2406.16100
openalex publication_date 2024/06/23 · openalex created_date 2024/06/26 · openalex updated_date 2026/07/28
The multipole modes of excitation for tetrahedrally deformed neutron-rich Zr isotopes are investigated using the quasiparticle finite amplitude method based on the covariant density functional theories. By employing the density-dependent point-coupling covariant density functional theory with the parameter set DD-PC1 in the particle-hole channel and a separable pairing interaction of finite range, it is observed that a distinct peak emerges at ω= 9.0 - 10.0 MeV in the isoscalar quadrupole K=0 strength when β32 distortion is considered for 110,112Zr. This peak is absent when the deformation is limited to axially symmetric octuple or spherical case. It also does not appears in neighboring axially quadrople or octupole deformed nuclei, thus can be viewed as an indicator for the tetrahedral shape.