Speaker
Dr
Peter Bender
(TRIUMF)
Description
The shape coexistence and shape transition at $N=60$ in the Sr, Zr region is the subject of substantial
current experimental and theoretical effort.
An important aspect in this context is the evolution of
single particle structure for $N<60$ leading up to the shape transition region, which can be calculated
with modern large scale shell model calculations using a $^{78}$Ni core or Beyond Mean Field Models.
One-neutron transfer reactions are a proven tool to study single-particle energies as well as occupation numbers.
Here we report on the study of the single-particle structure in $^{95-97}$Sr via ($d,p$) one-neutron transfer
reactions in inverse kinematics.
The experiments presented were performed at TRIUMF's ISAC facility using the
TIGRESS gamma-ray spectrometer in conjunction with the SHARC charge particle detector.
Highly charged beams of $^{94,95,96}$Sr, produced in the ISAC UCx target and charge-bred by an ECR source
were accelerated to 5.5 MeV/$A$ in the superconducting ISAC-II linac before delivery to the experimental station.
Other than their clear scientific value, these measurements were landmark being the first high mass ($A>30$)
post-accelerated radioactive beam experiments performed at TRIUMF.
Recent advances within the facility making the measurements posisble will be highlighted as well as initial results from the experiments discussed
in the context of evolving single-particle structure.
Primary author
Dr
Peter Bender
(TRIUMF)
