Conveners
Beta-decay Session
- Stephan Malbrunot (CERN)
The structure of the odd-odd, neutron-rich bismuth isotopes provides an excellent testing ground for shell-model calculations. While the low-lying structure in $^{210}$Bi ($Z = 83$, $N = 127$) is expected to be dominated by $(\pi h_{9/2})(\nu g_{9/2})$ configurations, the gradual filling of the $\nu g_{9/2}$ and higher-lying shells will alter this situation. For $^{210,212,214}$Bi, $I^\pi =...
The neutron-deficient mercury isotopes ($Z=80$) around $N=104$ represent one of the most prominent examples of shape coexistence [1]. This region has been extensively studied using various experimental techniques, such as laser spectroscopy [2,3], decay spectroscopy studies [4-6] and Coulomb excitation [7,8]. These studies point to the coexistence of two classes of states with strong mixing...
One possible extention of the standard model of particle physics is the addition of left-handed scalar and tensor currents to the well-established V-A model of the weak interaction. These contributions can be tested by nuclear beta decay. The 0+ - 0+ decay of 10C and other light even-even nuclei can in particular determine limits on scalar currents.
In an experiment at ISOLDE, we have...
The $\beta$ decay of $^{208}$Hg into the one-proton hole, one neutron-particle $_{ 81}^{208}$Tl$_{127}$ nucleus was investigated at the ISOLDE Decay Station. Shell-model calculations describe well the level scheme deduced, validating the proton-neutron interactions used, with implications for the whole of the N$>$126, Z$<$82 quadrant of neutron-rich nuclei. While both negative and positive...
