Feb 7 – 9, 2017
Radisson Hotel Lansing
US/Eastern timezone

Studying the 7-Be(α, γ)11-C reaction rate with DRAGON and the nuclear physics uncertainties of the νp-process

Feb 8, 2017, 4:00 PM
Radisson Hotel Lansing

Radisson Hotel Lansing

111 N Grand Ave, Lansing, MI 48933
Talk [Main Conference] Contributed talk Session 8


Mr Athanasios Psaltis (McMaster University)


The origin of the about 35 neutron-deficient stable isotopes with mass numbers A >74, known as the *p*-nuclei, has been a longstanding puzzle in Nuclear Astrophysics. The νp-process is a candidate for the production of the light *p*-nuclei, but it presents high sensitivity to both supernova dynamics and nuclear physics [1,2]. It has been recently shown that the breakout from pp-chains through the 7Be(α,γ)11C reaction can significantly influence the production of p-nuclei in the 90<A<110 region [2]. Nevertheless, this reaction has not been studied well yet in the relevant temperature range (T<sub>9=1-3). To that end, the first study of important resonances of 7Be(α,γ)11C reaction with unknown strengths using DRAGON [3] was recently proposed and approved by TRIUMF. The reaction will be studied in inverse kinematics using a radioactive 7Be (t1/2=53.24 d) beam provided by ISAC-I and three resonances above the alpha-threshold - Eth= 7543.62 keV - are planned to be measured. Moreover, simulation results from the study of the transmission of the recoils and the efficiency of the BGO array of DRAGON with GEANT3 will be presented. **References** [1] C. Frohlich *et al.*, Phys. Rev. Lett. **96**, 142502 (2006). [2] S. Wanajo, H.-T. Janka and S. Kubono, Astrophys. J. **729**, 46 (2011). [3] D.A. Hutcheon *et al.*, Nucl. Instr. Meth. Phys. Res. A **498**, 190 (2003).

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Mr Athanasios Psaltis (McMaster University)

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