Jun 13 – 19, 2015
University of Alberta
America/Edmonton timezone
Welcome to the 2015 CAP Congress! / Bienvenue au congrès de l'ACP 2015!

Single particle structure in neutron-rich Sr isotopes approaching $N=60$

Jun 16, 2015, 1:45 PM
CCIS L1-140 (University of Alberta)

CCIS L1-140

University of Alberta

Invited Speaker / Conférencier invité Nuclear Physics / Physique nucléaire (DNP-DPN) T2-5 Nuclear Structure II (DNP) / Structure nucléaire II (DPN)


Dr Peter Bender (TRIUMF)


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)

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