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Feb 15 – 18, 2018
Canada/Eastern timezone

One-Neutron Transfer into 22Ne (student talk)

Feb 16, 2018, 10:00 AM


Beau Greaves (University of Guelph)


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 main neutron sources for the s-process. By using the high granularity of the TIGRESS high purity germanium detector array we can confirm the resonance energies, coupled to the SHARC highly segmented silicon detector we can determine the spins for these resonances, and using Doppler shift attenuation method we will constrain lifetimes of resonances down to femtoseconds, all allowing for the reaction rate of 22Ne production in AGB stars to be better defined, giving insight into the low abundance of 19F and a better understanding of nucleosynthesis through the s-process.

Primary authors

Beau Greaves (University of Guelph) Dr Dennis Muecher (University of Guelph) Dr Stephen Gillespie (TRIUMF)


Mr Andrew Maclean (University of Guelph) Dr Carl Svensson (University of Guelph) Ms Christina Burbadge (University of Guelph) Mr Devin Hymers (University of Guelph) Ms Eva Kasanda (University of Guelph) Dr Greg Hackman (TRIUMF) Mr Joseph Turko (University of Guelph) Dr Krzysztof Starosta (Simon Fraser University) Dr Tom Drake (University of Toronto) Mr Tomer Rockman (University of Guelph)

Presentation materials