Intrinsic reflection asymmetry in atomic nuclei

PA Butler, W Nazarewicz - Reviews of Modern Physics, 1996 - APS
The experimental and theoretical evidence for intrinsic reflection-asymmetric shapes in
nuclei is reviewed. The theoretical methods discussed cover a wide spectrum, from mean …

Investigation of nuclear structure by resonance fluorescence scattering

U Kneissl, HH Pitz, A Zilges - Progress in Particle and Nuclear Physics, 1996 - Elsevier
After and introduction to the subject, the formalism describing nuclear resonance scattering
(NRF) is briefly summarized. Experimental techniques and developments are discussed in …

Microscopic description of octupole shape-phase transitions in light actinide and rare-earth nuclei

K Nomura, D Vretenar, T Nikšić, BN Lu - Physical Review C, 2014 - APS
A systematic analysis of low-lying quadrupole and octupole collective states is presented
based on the microscopic energy density functional framework. By map** the deformation …

Octupole correlations in the transitional actinides and the interacting boson model

NV Zamfir, D Kusnezov - Physical Review C, 2001 - APS
The region of light actinides (Z∼ 8 8, N∼ 1 3 4), which is thought to exhibit signs of stable
octupole deformation, offers a real challenge for nuclear structure models. We study the …

Octupole correlations in the nucleus described with symmetry-conserving configuration-mixing calculations

RN Bernard, LM Robledo, TR Rodríguez - Physical Review C, 2016 - APS
We study the interplay of quadrupole and octupole degrees of freedom in the structure of the
isotope Ba 144. A symmetry-conserving configuration-mixing method (SCCM) based on a …

Spectroscopy of quadrupole and octupole states in rare-earth nuclei from a Gogny force

K Nomura, R Rodríguez-Guzmán, LM Robledo - Physical Review C, 2015 - APS
Collective quadrupole and octupole states are described in a series of Sm and Gd isotopes
within the framework of the interacting boson model (IBM), whose Hamiltonian parameters …

Evolution of octupole deformation and collectivity in neutron-rich lanthanides

K Nomura, R Rodríguez-Guzmán, LM Robledo… - Physical Review C, 2021 - APS
The onset of octupole deformation and its impact on related spectroscopic properties is
studied in even-even neutron-rich lanthanide isotopes Xe, Ba, Ce, and Nd with neutron …

Microscopic analysis of the octupole phase transition in Th isotopes

K Nomura, D Vretenar, BN Lu - Physical Review C—Nuclear Physics, 2013 - APS
A shape phase transition between stable octupole deformation and octupole vibrations in Th
nuclei is analyzed in a microscopic framework based on nuclear density functional theory …

Origin of Low-Lying Enhanced Strength in Rare-Earth Nuclei

M Spieker, S Pascu, A Zilges, F Iachello - Physical Review Letters, 2015 - APS
The experimental E 1 strength distribution below 4 MeV in rare-earth nuclei suggests a local
breaking of isospin symmetry. In addition to the octupole states, additional J π= 1-states with …

Octupole correlations in collective excitations of neutron-rich nuclei

K Nomura - Physical Review C, 2022 - APS
Octupole correlations in the low-energy collective states of neutron-rich nuclei with the
neutron number N≈ 56 are studied within the interacting boson model (IBM) that is based …