Nuclear Structure 2024

Session

Reaction & Structure Related to Nuclear Astrophysics

Jul 22, 2024, 3:50 PM

Auditorium (APS Conference Center, Argonne)

Conveners

Reaction & Structure Related to Nuclear Astrophysics

• Steven Pain (Oak Ridge National Laboratory)

14. Accessing explosive stellar nucleosynthesis in grounded laboratories

Chloe Fougères (CEA)

7/22/24, 3:50 PM

Many elements along the nuclear chart are formed in stellar explosive environments where the reached tem- peratures and densities allow to go beyond stability via capture reactions of light nuclei as p, n, and αAs well as improving our understanding of the origin of elements, signatures of the ongoing nucleosynthesis help us to gain insights in such cosmic outbursts: low-energy γ-ray...

15. Understanding the P-Process Using Gamma-Induced Reactions

Kelly Chipps (Oak Ridge National Laboratory)

7/22/24, 4:15 PM

The astrophysical source of the p nuclei – a series of rare, proton-rich stable isotopes with abnormally high natural abundances – remains an open question. The p nuclei cannot be produced through the known neutron capture processes, but instead are thought to be synthesized in astrophysical environments via a series of photodisintegration reactions on s-process seeds. A major source of...

16. 58Ni(3He,t)58Cu Measurements to Constrain the Astrophysical Rate of 57Ni(p,γ)58Cu

Scott Carmichael (University of Notre Dame)

7/22/24, 4:35 PM

The 57Ni(p,γ)58Cu reaction rate significantly impacts nucleosynthesis in a variety of astrophysical sites. In core-collapse supernovae (CCSNe) this reaction impacts the production of 44Ti, a radioiso- tope whose observed gamma-ray emissions offer an important probe into CCSNe, providing a test of nucleosynthesis models. Furthermore, the 57Ni(p,γ)58Cu reaction rate has been shown to...

17. Probing lifetimes of short-lived nuclear resonances of astrophysical interest

Lijie Sun (Facility for Rare Isotope Beams)

7/22/24, 4:55 PM

Classical novae and Type I X-ray bursts (XRBs) are among the most frequent thermonuclear stellar explosions in the Galaxy. The 30P(p,γ)31S reaction acts as a nucleosynthesis bottleneck in the flow of material to heavier masses, affecting several nova observables. The dominant source of uncertainty in the current recommended reaction rate is the theoretical γ decay width of the 3/2+, 260-keV...