EPJ Web Conf.
Volume 279, 2023Nuclear Physics in Astrophysics – X (NPA-X 2022)
|Number of page(s)||4|
|Section||Methods / Facilities|
|Published online||22 March 2023|
A technique for studying (n,p) reactions of astrophysical interest using radioactive beams with SECAR
1 Department of Physics, Central Michigan University, Mt. Pleasant, MI 48859, USA
2 Facility for Rare Isotope Beams, Michigan State University, East Lansing, MI 48824, USA
3 Department of Physics and Astronomy, University of Notre Dame, Notre Dame, IN 46556, USA
4 Department of Physics & Astronomy, Ohio University, Athens, OH 45701, USA
5 Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
6 Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, USA
7 Department of Physics, Colorado School of Mines, Golden, CO 80401, USA
8 Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA
9 The Joint Institute for Nuclear Astrophysics Center for the Evolution of the Elements, Michigan State University, East Lansing, MI 48824, USA
10 The Joint Institute for Nuclear Astrophysics Center for the Evolution of the Elements, University of Notre Dame, Notre Dame, IN 46556, USA
* e-mail: firstname.lastname@example.org
Published online: 22 March 2023
The formation of nuclei in slightly proton-rich regions of the neutrino-driven wind of core-collapse supernovae could be attributed to the neutrino-p process (νp-process). As it proceeds via a sequence of (p,γ) and (n,p) reactions, it may produce elements in the range of Ni and Sn, considering adequate conditions. Recent studies identify a number of decisive (n,p) reactions that control the efficiency of the νp-process. The study of one such (n,p) reaction via the measurement of the reverse (p,n) in inverse kinematics was performed with SECAR at NSCL/FRIB. Proton-induced reaction measurements, especially at the mass region of interest, are notably difficult since the recoils have nearly identical masses as the unreacted projectiles. Such measurements are feasible with the adequate separation level achieved with SECAR, and the in-coincidence neutron detection. Adjustments of the SECAR system for the first (p,n) reaction measurement included the development of new ion beam optics, and the installation of the neutron detection system. The aforementioned developments along with a discussion on the preliminary results of the p(58Fe,n)58Co reaction measurement are presented.
© The Authors, published by EDP Sciences, 2023
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