Constraining the 30P(p, γ)31S reaction using 30P(d,p γ)31P with GODDESS
Abstract
The 30P(p, γ)31S reaction rate critically affects the mass flow into the A=30-40 range, impacting abundances of isotopes of P, S and Si during classical nova nucleosynthesis. This reaction rate depends on undetermined spectroscopic strengths of low-lying resonances in 31S, lying between 6 and 7 MeV in excitation. But, direct measurement of (p, γ) reaction is not possible due to low intensities of currently available 30P beam and proton spectroscopic factors on unstable nuclei are difficult to measure experimentally. We performed a 30P(d,p γ)31P reaction measurement using the newly commissioned GODDESS (Gretina-ORRUBA: Dual Detectors for Experimental Structure Studies) system-with an 8 MeV/u 30P beam, from RAISOR at ATLAS, to provide constraints on the proton spectroscopic strengths for 31S levels via mirror symmetry. Experimental details and data analysis status will be presented.
This work is supported by the U.S. Dept. of Energy, Office of Science, Office of Nuclear Physics, the NNSA SSAA Program, and the National Science Foundation.- Publication:
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APS Division of Nuclear Physics Meeting Abstracts
- Pub Date:
- 2020
- Bibcode:
- 2020APS..DNP.ME002G