2017 CAP Congress / Congrès de l'ACP 2017

Recent Results in Decay Spectroscopy with GRIFFIN

30 May 2017, 16:00

30m

Botterell B147 (Queen's University)

Invited Speaker / Conférencier invité Nuclear Physics / Physique nucléaire (DNP-DPN) T4-5 Nuclear Structure II (DNP) | Structure nucléaire II (DPN)

Speaker

Dr Kenneth Whitmore (Simon Fraser University)

Description

The Gamma-Ray Infrastructure For Fundamental Investigations of Nuclei (GRIFFIN) is a new state-of-the-art gamma-ray spectrometer. GRIFFIN is composed of 64 large-volume high-purity germanium detectors arranged in 16 clovers and is designed to measure the decay of radioactive-isotopes beams produced by the TRIUMF Isotope Separator and Accelerator (ISAC). The array can be coupled to a variety of auxiliary detectors which detect electrons as well as neutrons, allowing for increased sensitivity by using particle-$\gamma$ and particle-$\gamma$-$\gamma$ coincidences. In addition, fast-timing scintillators can be used to measure lifetimes of nuclear states. The high efficiency of the array also makes it possible to perform detailed $\gamma$-ray angular correlation measurements, making GRIFFIN a powerful tool for nuclear spectroscopy.

Since being installed and commissioned in 2014, the GRIFFIN array has been used in several experimental programs with applications ranging from the astrophysical $r$-process to tests of $ab$-$initio$ theory near shell closures. In this talk, I will present the results of several of the first experiments using GRIFFIN and give an outlook for future capabilities.