Weak-interaction and nuclear-structure aspects of nuclear double beta decay

Electric monopole transitions between 0+ states for nuclei throughout the periodic table

Nuclear data sheets for a=110

Multiphonon vibrational states in 106,108Pd

Lifetimes of levels below 4 MeV in $^{112}\mathrm{Cd}$ have been measured using the Doppler shift attenuation technique following inelastic scattering of monoenergetic neutrons Reduced transition rates are determined using the results of previous studies and the current lifetimes The electromagnetic properties of $^{112}\mathrm{Cd}$ are outlined, and together with results from previous nucleon-transfer studies and inelastic scattering, the levels in $^{112}\mathrm{Cd}$ are interpreted in terms of single-particle configurations and collective excitations, assuming a vibrational model with intruder states The collective states and their \ensuremath{\gamma}-ray decays are compared with IBM-2 model calculations that allow for the mixing between the normal phonon states and intruder configurations Levels below 15 MeV are reproduced reasonably well, whereas at higher excitation energy the calculations fail to reproduce the data in detail

https://doc.rero.ch/record/8249/files/lehmann_pcf.pdf

Properties of Cd 112 from the ( n , n ' γ ) reaction: Lifetimes and transition rates

Low-lying low-spin collective states in even $^{106\mathrm{\ensuremath{-}}112}\mathrm{Cd}$ and $^{116}\mathrm{Cd}$ were investigated using in-beam and off-beam \ensuremath{\gamma}-ray and conversion-electron spectroscopy. New spin assignments and decay branching ratios for the levels in $^{106}\mathrm{Cd}$, $^{108}\mathrm{Cd}$, $^{110}\mathrm{Cd}$, and $^{112}\mathrm{Cd}$ were obtained. The present results essentially complement the level systematics from $^{106}\mathrm{Cd}$ to $^{120}\mathrm{Cd}$. From the new data, it is inferred that two sets of low-lying ${0}^{+}$ states having different excitation characteristics cross between $^{114}\mathrm{Cd}$ and $^{116}\mathrm{Cd}$. No corresponding crossing occurs on the neutron deficient side. New evidence for the existence of the proton-intruder states has been found.

D. Cutoiu

Papers

Systematic study of low-spin states in even Cd nuclei.