Quinto Incontro Nazionale di Fisica Nucleare INFN 2022

Session

Astrofisica nucleare II

9 May 2022, 14:30

Auditorium "E. Fermi" (LNGS)

34. The relevance of Muons and Trapped Neutrinos in the microphysics of Binary Neutron Star mergers

Eleonora Loffredo (Istituto Nazionale di Fisica Nucleare)

09/05/2022, 14:30

A deep understanding of the dynamics of Binary Neutron Star (BNS) mergers requires a detailed treatment of the relativistic hydrodynamics of the merger, as well as of the microphysics governing the underlying electromagnetic, strong and weak interactions. Accurate numerical simulations are pivotal to correctly interpret the data collected through the detection of gravitational waves and...

15. LUNA at LNGS: Status and perspectives

Antonio Caciolli (Istituto Nazionale di Fisica Nucleare)

09/05/2022, 14:50

Over the last few years, several processes relevant to the CNO, MgAl and NeNa cycles have been studied using the LUNA 400 kV machine and I will report about few recent results. By the end of 2022 LNGS is planning to conclude installation and commissioning of the new 3.5 MV accelerator. This investment is allocated in the context of the Progetto Premiale "LUNA-MV”. LUNA has been measuring cross...

58. Thermal effects on nuclear matter properties

Lucas Tonetto (ROMA1)

09/05/2022, 15:10

A quantitative description of the properties of hot nuclear matter will be needed for the interpretation of the available and forthcoming astrophysical data, providing information on the post merger phase of neutron star coalescence. We have employed a recently developed theoretical model, based on a phenomenological nuclear Hamiltonian, to study the temperature dependence of several nuclear...

54. ERNA commissioning for the $^{12}C(\alpha,\gamma)^{16}O$

Claudio Santonastaso (Università della Campania "Luigi Vanvitelli", INFN sez. Napoli)

09/05/2022, 15:30

Abundance of carbon and oxygen in the universe is one of the main questions of Nuclear Astrophysics. Its knowledge is strictly bound to the detrmination of the reaction rate of $^{12}C(\alpha,\gamma)^{16}O$ which heavily influences star evolution.\
At the energy of astrophysical interest ($\sim$300 keV) multiple transitions contribute to the cross section and its absolute value is too low...

33. Sheding light on $^{17}$O(n,$\alpha$)$^{14}$C reaction at astrophysical energies with Trojan Horse Method and Asymptotic Normalization Coefficient

Giovanni Luca Guardo (Istituto Nazionale di Fisica Nucleare)

09/05/2022, 15:50

The $^{17}$O(n,$\alpha$)$^{14}$C reaction is considered in astrophysical codes for its role in the astrophysically relevant "s(slow)-process" since it could act as a possible “neutron-poison” for the neutron induced nucleosynthesis thus influencing the final stellar abundances of some elements such as Fe, Ni or Sr. Thus, its reaction rate must be known in the energy region of interest for...