A technique for studying (n,p) reactions of astrophysical interest using radioactive beams with SECAR

Conference · Wed Mar 01 00:00:00 EST 2023

DOI:https://doi.org/10.1051/epjconf/202327913005· OSTI ID:1994627

Tsintari, P ^[1]; Berg, Georg P. A. ^[2]; Blackmon, Jeffrey ^[3]; Chipps, Kelly  ^[4]; Couder, Manoel ^[2]; Deibel, Catherine ^[4]; Dimitrakopoulos, Nikolaos ^[5]; Garg, Ruchi ^[6]; Greife, Uwe ^[4]; Hermansen, Kirby ^[7]; Hood, Ashley ^[3]; Jain, Rahul ^[8]; Maher, Cavan ^[7]; Marshall, Caleb ^[9]; Meisel, Zach ^[9]; Miskovich, Sara ^[10]; Montes, Fernando ^[7]; Perdikakis, Georgios ^[5]; Pereira, Jorge ^[7]; Ruland, Thomas  ^[4] ; Schatz, Hendrik ^[4]; Setoodehnia, Kiana ^[6]; Smith, Michael  ^[4]; Wagner, Louis ^[6]; Zegers, Remco ^[6]

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1. Central Michigan University, Mt Pleasant
2. University of Notre Dame, IN
3. Louisiana State University
4. ORNL
5. Central Michigan University, Mt. Pleasant
6. Michigan State University
7. Michigan State University, East Lansing
8. Michigan State University, National Superconducting Cyclotron Laboratory (NSCL)
9. Ohio University
10. Stanford University

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.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1994627
• Resource Relation: Journal Volume: 279; Conference: Nuclear Physics in Astrophysics NPA-X 2022 - Geneva, , Switzerland - 8/29/2022 4:00:00 AM-
• Country of Publication: United States
• Language: English