### Conveners

#### T3-6 Nuclear Structure III (DNP) / Structures nucléaires III (DPN)

- Jens Dilling (triumf/UBC)

Dr
Jenna Smith
(TRIUMF)

6/16/15, 3:45 PM

Nuclear Physics / Physique nucléaire (DNP-DPN)

Oral (Non-Student) / orale (non-étudiant)

Recent developments in many-body calculation methods have extended the application of *ab initio* interactions to medium-mass nuclei near closed shells. Detailed nuclear data from these isotopes are necessary to evaluate the many-body calculation methods and to test the predictive capacity of the interactions. $^{47}$Ca and $^{47}$K are each one nucleon removed from the doubly-magic nucleus...

Ms
Jennifer Pore
(Simon Fraser University)

6/16/15, 4:00 PM

Nuclear Physics / Physique nucléaire (DNP-DPN)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Due to its very low natural abundance of 0.004%, the structure of the magic nucleus $^{46}$Ca has not been studied in great detail compared to its even-even Ca neighbors. The calcium region is currently a new frontier for modern shell model calculations based on NN and 3N forces [1,2], so detailed experimental data from these nuclei is necessary for a comprehensive understanding of the region....

Mr
Ryan Dunlop
(University of Guelph)

6/16/15, 4:15 PM

Nuclear Physics / Physique nucléaire (DNP-DPN)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

In adopted models for the $s$-process, it is assumed that helium shell flashes give rise to two neutron bursts at two different thermal energies $(kT\sim10$ keV and $kT\sim25$ keV). The contribution to the isotopic abundance of $^{116}$Cd from the higher temperature neutron bursts are calculated assuming thermal equilibrium between the ground state and the long-lived isomeric state of...

Mr
Andrew MacLean
(University of Guelph)

6/16/15, 4:30 PM

Nuclear Physics / Physique nucléaire (DNP-DPN)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

When a excited nuclear state emits successive $\gamma$-rays in a $\gamma-\gamma$ cascade, $X^{**} \rightarrow X^{*} + \gamma_{1} \rightarrow X + \gamma_{2}$ an anisotropy is found in the spatial distribution of $\gamma_{2}$ with respect to $\gamma_{1}$. By defining the direction of $\gamma_{1}$ to be the z-axis, the intermediate level, $X^{*} $, in general will have an uneven distribution of...

Michelle Dunlop
(University of Guelph)

6/16/15, 4:45 PM

Nuclear Physics / Physique nucléaire (DNP-DPN)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

High precision measurements of superallowed Fermi beta transitions between 0$^+$ isobaric analogue states allow for stringent tests of the electroweak interaction described by the Standard Model. In particular, these transitions provide an experimental probe of the unitary of the Cabibbo-Kobayashi-Maskawa (CKM) matrix, the Conserved-Vector-Current (CVC) hypothesis, as well as set limits on...

Nikita Bernier
(TRIUMF)

6/16/15, 5:00 PM

Nuclear Physics / Physique nucléaire (DNP-DPN)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

GRIFFIN (Gamma-Ray Infrastructure For Fundamental Investigations of Nuclei) was installed at the TRIUMF-ISAC-I facility during 2014 and represents a major upgrade to the 8$\pi$ spectrometer which operated at ISAC for the past decade. With an array of 16 large-volume hyper-pure germanium (HPGe) clover detectors, instrumented with a state-of-the-art digital data acquisition system, the array...