Nuclear Physics in Astrophysics - X

Session

Wednesday - Session 2

7 Sept 2022, 11:00

500/1-001 - Main Auditorium (CERN)

Conveners

Wednesday - Session 2

• Zsolt Podolyak (University of Surrey)

163. Kilonova: A signature of r-process nucleosynthesis

Gabriel Martínez Pinedo (GSI Darmstadt)

07/09/2022, 11:00

Invited

A kilonova is an electromagnetic transient powered by the radioactive decay of nuclei freshly
synthesized by the rapid neutron capture process (r-process). Its observation following the
gravitational wave event GW170817 provided the first evidence that the r-process operates in
neutron star mergers. Kilonova observations provide unique opportunities to learn about the in-
situ operation of...

19. New tool for sensitivity studies of r-process nucleosynthesis — a case study of the rare earth peak

Mr Yukiya Saito

07/09/2022, 11:30

Oral

The rapid neutron capture process ($r$-process) is a complex nucleosynthesis mechanism for the creation of heavy nuclei, which occurs under extreme astrophysical conditions, such as binary neutron star mergers and core-collapse supernovae. Not only are the predictions of the r-process abundance pattern affected by such astrophysical conditions, the calculations also involve thousands of...

43. Nuclear level densities and $\gamma-$ray strength functions of $^{120,124}$Sn for astrophysical purposes

Ms Maria Markova (University of Oslo)

07/09/2022, 11:45

Oral

The concepts of the nuclear level density (NLD) and $\gamma-$ray strength function (GSF) are two essential tools for the statistical description of excited nuclei and their $\gamma-$decay, used in numerous large-scale astrophysical calculations of abundances of elements in the universe. In this work, one of the widely used experimental techniques, the Oslo method was applied to the...

85. A global comparison of experimental and theoretical (p,$\gamma$)-reaction data relevant for the p process

Felix Heim

07/09/2022, 12:00

Oral

While most of the heavy elements in our universe are produced via neutron-capture processes, the nucleosynthesis of the neutron-deficient p nuclei is still an open question in nuclear astrophysics. The p nuclei are most likely produced in explosive stellar scenarios by the astrophysical $\gamma$ process, which is a complex network of thousands of nuclear - mostly photodisintegration -...

49. A novel method for constraining experimental neutron capture rates in unstable nuclei

Dennis Muecher (University of Guelph (CA)), Fabio Zeiser

07/09/2022, 12:15

Oral

Experimental neutron capture rates of short-lived neutron-rich nuclei are of pivotal importance for our understanding of explosive nucleosynthesis. In this contribution we present an improved method for constraining neutron capture rates in exotic nuclei experimentally with beam intensities down to a few pps using the $\beta$-Oslo method.

While a powerful technique to access the most exotic...