Collective 2p-2h intruder states in $^{118}$Sn studied via $β$-decay of $^{118}$In using GRIFFIN

Collective-model description of shape coexistence and intruder states in cadmium isotopes based on a relativistic energy density functional

Low-energy structure of even-even $^{108-116}$Cd isotopes is analyzed using a collective model that is based on the nuclear density functional theory. Spectroscopic properties are computed by solving the triaxial quadrupole collective Hamiltonian, with parameters determined by the constrained self-consistent mean-field calculations within the relativistic Hartree-Bogoliubov method employing a universal energy density functional and a pairing force. The collective Hamiltonian reproduces the observed quadrupole phonon states of vibrational character, which are based on the moderately deformed eq…

Effect of configuration mixing on quadrupole and octupole collective states of transitional nuclei

A model is presented that simultaneously describes shape coexistence and quadrupole and octupole collective excitations within a theoretical framework based on the nuclear density functional theory and the interacting boson model. An optimal interacting-boson Hamiltonian that incorporates the configuration mixing between normal and intruder states, as well as the octupole degrees of freedom, is identified by means of self-consistent mean-field calculations using a universal energy density functional and a pairing interaction, with constraints on the triaxial quadrupole and the axially-symmetri…

Shape coexisistence and collective low-spin states in $^{112,114}$Sn studied with the $(p,p'γ)$ DSA coincidence technique

Proton-scattering experiments followed by the coincident spectroscopy of $γ$ rays have been performed at the Institute for Nuclear Physics of the University of Cologne to excite low-spin states in $^{112}$Sn and $^{114}$Sn, to determine their lifetimes and extract reduced transitions strengths $B(ΠL)$. The combined spectroscopy setup SONIC@HORUS has been used to detect the scattered protons and the emitted $γ$ rays of excited states in coincidence. The novel $(p,p'γ)$ DSA coincidence technique was employed to measure sub-ps nuclear level lifetimes. 74 level lifetimes $τ$ of states with $J = 0 …

使用基于相对论能量密度泛函的四极集体哈密顿量研究 Te 同位素中的形状跃迁与共存

Shape transition and coexistence in Te isotopes studied with the quadrupole collective Hamiltonian based on a relativistic energy density functional

该研究采用基于相对论能量密度泛函的四极集体哈密顿量，解释偶偶 Te 同位素的形状共存、闯入态及低激发谱演化。

形状共存和构型混合对tellurium同位素中低能态的影响

Effects of shape coexistence and configuration mixing on low-lying states in tellurium isotopes

本研究利用相互作用玻色模型与构型混合，探讨了tellurium同位素中低能态的形状共存和构型混合效应。