12–17 Jun 2022
Europe/Budapest timezone

First direct measurement of the 13N(alpha,p)16O reaction relevant for core-collapse supernovae

Not scheduled
20m
Oral Presentation

Speaker

Heshani Jayatissa

Description

The first direct measurement of the total $^{13}$N($\alpha$,p)$^{16}$O reaction cross sections was performed using a 34.6 MeV beam of radioactive $^{13}$N and the active-target detector MUSIC at Argonne National Laboratory. The $^{13}$N($\alpha$,p)$^{16}$O reaction affects the nucleosynthesis in core-collapse supernovae (CCSNe) for a range of relevant temperatures according to several recent sensitivity studies. The $^{13}$N($\alpha$,p)$^{16}$O reaction cross sections at astrophysical energies have only been deduced via various indirect methods, and have never been measured directly. Recently published results for the $^{13}$N($\alpha$,p)$^{16}$O reaction rate from this measurement will be presented, including new experimental data, a theoretical analysis, and an improved astrophysical reaction rate. This work was supported by the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357. This research used resources of ANL’s ATLAS facility, which is a DOE Office of Science User Facility.

Length of presentation requested Oral presentation: 17 min + 3 min questions
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