Study of the 20Ne(p,γ) reaction rate using GRIFFIN γ-ray detectors coupled with the DRAGON recoil spectrometer at TRIUMF
ORAL
Abstract
The 20Ne(p,g) reaction is the reaction in the Ne-Na cycle that limits the production of 22Na, an important radiotracer, in O-Ne nova explosions (T=0.1-0.4GK). In this temperature range, the 20Ne(p,g) reaction rate is dominated by the direct capture to the barely-bound 1/2+ state in 21Na. Located just 7 keV below the one-proton separation energy (Sp), this state is likely a halo state which may enhance the direct capture. We aimed to measure the 20Ne(p,g) reaction rate near the Gamow window using the DRAGON recoil spectrometer coupled for the first time with six GRIFFIN HPGe clover detectors at TRIUMF. We also measured resonance strengths for three resonances that have had conflicting results from prior experiments. In this talk, the preliminary results of the direct capture reaction rates and resonance strengths will be shown.
*This work is partially funded by DOE grant DE-FG02-93ER40789 (Colorado School of Mines). The DRAGON recoil spectrometer is funded by NSERC SAPPJ-2023-00039. The GRIFFIN infrastructure has been funded by the Canada Foundation for Innovation, the British Columbia Knowledge Development Fund (BCKDF), the Ontario Ministry of Research and Innovation (ON-MRI), TRIUMF and the University of Guelph. The ongoing maintenance and operation of the GRIFFIN facility is funded through a Natural Sciences and Engineering Research Council of Canada (NSERC) subatomic physics project grant. TRIUMF receives federal funding via a contribution agreement through the National Research Council Canada (NRC).
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Presenters
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Madeleine Hanley
- Colorado School of Mines