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

Isomeric decay spectroscopy of 96Cd

16 Jun 2015, 14:30
15m
CCIS L1-140 (University of Alberta)

CCIS L1-140

University of Alberta

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition) Nuclear Physics / Physique nucléaire (DNP-DPN) T2-5 Nuclear Structure II (DNP) / Structure nucléaire II (DPN)

Speaker

Jason Park (University of British Columbia/TRIUMF)

Description

Self-conjugate nuclei, where $N=Z$, exhibit a strong $pn$ interaction due to the large overlap of wavefunctions in identical orbitals. The heaviest $N=Z$ nuclei studied so far is $^{92}$Pd, and it has demonstrated a strong binding in the $T = 0$ interaction [1]. As the mass number increases, the nucleus approaches the doubly-magic $^{100}$Sn. To investigate the evolution of the $pn$ interaction strength near the shell closure $N = Z = 50$, experimental results on the next self-conjugate, even-even nucleus $^{96}$Cd are needed. Record quantities of $^{96}$Cd were produced at RIKEN Radioactive Isotope Beam Factory, via fragmentation of an intense $^{124}$Xe beam on a thin $^{9}$Be target. Their decay products were measured with EURICA, consisting of HPGe/LaBr$_3$ detectors for gamma-rays, and WAS3ABI, a set of position-sensitive silicon detectors for positrons, protons and ions. A high-spin isomeric state in $^{96}$Cd was found, along with gamma-ray transitions that populate both the ground state and the 16$^{+}$ spin-trap isomeric state. Isomer half-lives and the proposed experimental level scheme of $^{96}$Cd will be presented, followed by a discussion of its $pn$ interaction strength and the decay to $^{96}$Ag.

Primary author

Jason Park (University of British Columbia/TRIUMF)

Co-authors

Dr Marek Lewitowicz (GANIL) Prof. Reiner Kruecken (TRIUMF) Dr Roman Gernhaeuser (TU Munich) Dr Shunji NISHIMURA (RIKEN)

Presentation Materials