2-7 June 2019
Simon Fraser University
America/Vancouver timezone
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Spectroscopic studies of the structure of neutron-rich isotopes $^{129}$Sn and $^{133}$Sn

3 Jun 2019, 13:45
15m
DAC FT I (Simon Fraser University)

DAC FT I

Simon Fraser University

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle) Nuclear Physics / Physique nucléaire (DNP-DPN) M2-5 Nuclear Structure I (DNP) | Structure nucléaire I (DPN)

Speaker

Ms Fatima H. Garcia (Simon Fraser University)

Description

The study of radioactive isotopes is key to understanding the fundamental building blocks of matter. These investigations require state-of-the-art experimental stations, which exist only in select facilities around the world. The Gamma Ray Infrastructure For Fundamental Investigations of Nuclei (GRIFFIN), at the ISAC facility of TRIUMF is a powerful decay spectrometer that can be used to study $\beta$ decaying species. The tin isotopes are an important part of the nuclide chart due to their magic proton number, $Z=50$, a stable configuration analogous to the noble gases. They span a total of forty isotopes, two neutron shell closures, at $N=50$ ($^{100}$Sn) and $N=82$ ($^{132}$Sn), and extend up to $N=89$ ($^{139}$Sn), making them an important testing ground for nuclear structure theory. Furthermore they are important in the rapid neutron capture process (r-process), responsible for the production of the heaviest elements in our universe. An isotope of tin with 79 neutrons, $^{129}$Sn, was studied via the $\beta$ decay of its indium parent, $^{129}$In, at the GRIFFIN station. So far the analysis of the decay spectroscopy data has uncovered twenty new transitions and seven new excited states, never before seen in this nucleus. The $^{133}$Sn nucleus was also studied at the GRIFFIN spectrometer, though the data was dominated by the $\beta$n decay of the $^{133}$In parent into $^{132}$Sn. Newly outfitted with BGO shields for Compton suppression, the GRIFFIN spectrometer has entered into a new phase; a reduction in the Compton continuum will allow for the observation of very weak transitions, offering a more detailed look into the tin isotopes. Results from the study of $^{129}$Sn and $^{133}$Sn, detection mechanisms and potential implications will be discussed.

Primary author

Ms Fatima H. Garcia (Simon Fraser University)

Co-authors

C. Andreoiu (Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada) Kevin Ortner Kurtis Raymond (Simon Fraser University) K. Whitmore (Department of Physics, Simon Fraser University, Burnaby, British Columbia) Gordon Ball (TRIUMF) Nikita Bernier (TRIUMF) H. Bidaman (Department of Physics, University of Guelph, Guelph, Ontario ) V. Bildstein (Department of Physics, University of Guelph, Guelph, Ontario ) M. Bowry (Physical Sciences Division, TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia) David Cross I. Dillmann (Physical Sciences Division, TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia) Michelle Dunlop (University of Guelph) Ryan Dunlop (University of Guelph) A. B. Garnsworthy (Physical Sciences Division, TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia) P. E. Garrett (Department of Physics, University of Guelph, Guelph, Ontario) Greg Hackman (TRIUMF) Dr Jack Henderson (TRIUMF) J. Measures (TRIUMF) Dennis Muecher (University of Guelph) B. Olaizola (Physical Sciences Division, TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia) Costel Petrache (University Paris Sud) Jason Park (University of British Columbia/TRIUMF) Jennifer Pore Jenna Smith (TRIUMF) Daniel Southall (TRIUMF) C. E. Svensson (Department of Physics, University of Guelph, Guelph, Ontario) Marius Ticu (Department of Chemistry, Simon Fraser University) Joseph Turko (University of Guelph) T. Zidar (Department of Physics, University of Guelph, Guelph, Ontario )

Presentation Materials