Study of the ²⁰Ne(p,γ) reaction rate using GRIFFIN γ-ray detectors coupled with the DRAGON recoil spectrometer at TRIUMF

The ²⁰Ne(p,γ) reaction is the reaction in the Ne-Na cycle that limits the production of ²²Na, an important radiotracer (T_1/2=2.6yr), in O-Ne nova explosions (T=0.1-0.4GK). In this temperature range, the ²⁰Ne(p,γ) 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 (S_p), this state is likely a halo state which may enhance the direct capture. A similar enhancement has been observed in the ¹⁶O(p,γ) reaction proceeding via direct capture to the 1/2⁺ state in ¹⁷F located 105keV below S_p. We aim to measure the ²⁰Ne(p,γ) reaction rate near the Gamow window using the DRAGON recoil spectrometer coupled for the first time with six GRIFFIN HPGe clover detectors at TRIUMF. In this talk, the preliminary results from the initial run at 550keV center-of-mass energy will be presented together with the plan for upcoming measurements later this year.