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First direct measurement of the $^{13}$N(alpha,p)$^{16}$O reaction for core-collapse supernovae
Presented By: Heshani Jayatissa / hjayatissa@anl.gov / https://www.linkedin.com/in/heshj
Heshani is currently a postdoctoral researcher in the Low Energy Nuclear Physics group in the Physics Division of Argonne National Laboratory. She received her Ph.D. in 2019 working with Dr. Grigory Rogachev at the Texas A&M University Cyclotron Institute. Her doctoral research was focused on using sub-Coulomb alpha-transfer techniques to constrain the rates of astrophysically-relevant nuclear reactions. At Argonne, she continues performing research in nuclear astrophysics with Dr. Melina Avila, specifically measuring direct (alpha,p) and (alpha,xn) reactions relevant for nuclear astrophysics using the Multi-Sampling Ionization Chamber (MUSIC). She actively participates in nuclear astrophysics and structure measurements by the various experimental research groups at the Argonne ATLAS user facility using both stable and radioactive beams.
Abstract
The $^{13}$N(alpha,p)$^{16}$O reaction has been identified in several recent sensitivity studies as a reaction which affects the nucleosynthesis in core-collapse supernovae (CCSNe) for a range of relevant temperatures. The $^{13}$N(alpha,p)$^{16}$O reaction cross sections have not been measured directly in the past, and various indirect methods have been used to infer the $^{13}$N(alpha,p)$^{16}$O reaction rate. 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. Recently finalized results for the $^{13}$N(alpha,p)$^{16}$O reaction rate from this measurement will be presented. Download AbstractHosted By
Florida State University