Winter Nuclear Particle Physics (WNPPC) 2018

Session

Session #2

16 Feb 2018, 09:00

12. Internal Conversion Electron Spectroscopy at TRIUMF-ISAC [INVITED]

Dr James Smallcombe (TRIUMF)

16/02/2018, 09:00

Internal conversion electron (ICE) spectroscopy is a key tool of nuclear structure research, particularly for the study of elusive electric monopole (E0) transitions. Such spectroscopy is less common than gamma-ray spectroscopy due to the technical challenges involved, however it provides crucial insight few other techniques can. The nuclear spectroscopy group at TRIUMF has two powerful...

2. High-statistics $\beta$-decay study of collectivity in ${}^{122}$Xe (student talk)

Badamsambuu Jigmeddorj (University of Guelph)

16/02/2018, 09:30

The evolution of the simple collective signature, the excited first $2^{+}$ state energy, is extraordinarily smooth for the nuclei in the Z$>$50, N$<$82 region, which is expected to be an ideal region to test collectivity. The study of ${}^{122}$Xe is a part of a systematic examination of the development of collectivity in the Xe isotopes which are located in the region. Detailed...

46. Decay Spectroscopy of ${}^{126}$Xe

Dr Farnaz Ghazi Moradi (University of Guelph)

16/02/2018, 09:45

The low-spin excited states in the non-yrast bands of Xe nuclei in A=120-130 mass zone exhibit excitations built on both rotational and vibrational degrees of freedom.The precise branching ratio measurements of the often weak transitions that connect these low-lying collective states and the determination of their $B(E2)$ values play an important role in characterization of the excited states...

4. One-Neutron Transfer into 22Ne (student talk)

Beau Greaves (University of Guelph)

16/02/2018, 10:00

In this contribution, we present a preliminary look into a recent neutron transfer experiment done at TRIUMF in July 2017 studying the 22Ne nucleus. 22Ne plays an important role in the nucleosynthesis in asymptotic giant branch stars, with its synthesis competing with the production of 19F through the so called ‘poisoning reaction’, and the following transfer into 25Mg acting as one of the...

31. Search for New Physics in Beryllium

Prof. Viktor Zacek (University of Montreal)

16/02/2018, 10:15

Nuclear transitions provide a means to probe light, weakly-coupled new physics and portals into the dark sector. Particularly promising are those transitions that can be accessed through excited nuclear states that are resonantly produced, providing a high-statistics laboratory to search for MeV-scale new physics. In this talk we will review the so-called 8Be - anomaly, which is a 6.8 σ...

39. Decay Spectroscopy of Neutron-rich ${}^{129}$Cd with GRIFFIN Spectrometer (student talk)

Mr Yukiya Saito (The University of British Columbia / TRIUMF)

16/02/2018, 10:45

Nuclei around doubly magic ${}^{132}$Sn are of particular interest in terms of nuclear structure as well as nuclear astrophysics. The properties of these nuclei provide important input parameters for the astrophysical $r$-process (rapid neutron-capture process) since they play a role as waiting-point nuclei and their shell structure and half-lives affect the shape of the second $r$-abundance...

34. Decay Spectroscopy of Neutron-Rich Cd Around the $N=82$ Shell Closure (student talk)

Nikita Bernier (TRIUMF/UBC)

16/02/2018, 11:00

The neutron-rich Cadmium isotopes around the well-known magic numbers at $Z=50$ and $N=82$ are prime candidates to study the evolving shell structure observed in exotic nuclei. Additionally, the extra binding energy observed around the nearby doubly-magic ${}^{132}$Sn has direct correlations in astrophysical models, leading to the second r-process abundance peak at $A\approx 130$ and the...

10. High-sensitivity atomic magnetometer for neutron EDM (student talk)

Moushumi Das (TUCAN collaboration)

16/02/2018, 11:15

A non-zero neutron electric dipole moment (nEDM) would indicate time reversal and consequently charge-parity violation (T and CP). Many experiments are currently being conducted or planned to measure the nEDM. At present the experimental upper bound on the nEDM is $3.0\times {10}^{-26}$ e-cm. Our collaboration is developing an experiment at TRIUMF to improve the sensitivity to the nEDM by over one...

9. Compensation of Magnetic Fields at the TRIUMF nEDM Experiment (student talk)

Mr Shomi Ahmed (U of Manitoba/ U of Winnipeg - for the TUCAN Collaboration)

16/02/2018, 11:30

The existence of a non-zero neutron electric dipole moment (nEDM) would violate parity and time-reversal symmetry. Extensions to the Standard Model predict the nEDM to be ${10}^{-26}$ - ${10}^{-28}$ e-cm. The current best upper limit set by Sussex/RAL/ILL nEDM experiment is $3.0\times {10}^{-26}$ e-cm. The nEDM experiment at TRIUMF is aiming at the ${10}^{-27}$ e-cm sensitivity level. We are...