APEC Seminar (Astronomy - Particle Physics - Experimental Physics - Cosmology)

Speaker: Igor Panov (ITEP)
Title: Nucleosynthesis of heavy elements in the r-process
Date: Wed, Feb 22, 2017, 15:40 - 15:35
Place: Seminar Room A
Abstract: Almost all chemical elements in nature are formed in reactions with neutrons. Half of them are produced in the rapid nucleosynthesis
(r-process) and consequent beta-decay during explosive scenario, connected with supernova explosions and during evolution of their compact remnants.
In this talk, the conditions, under which the main r-process can occur, as well as the opportunities for weak r-process, leading to formation of nuclei before and around of cadmium peak, will be considered.
The evolution of the r-process path during dynamical nucleosynthesis and theoretical abundance curves calculated for different r-processes (main and weak) will be discussed.
The nuclear data influence upon the abundances of heavy elements and agreement with observations will be shown as well as the possible applications of the r-process calculations for connected astrophysical tasks (Age of Universe, super-heavy elements etc).
Two different scenario, in which r-process can occur - neutron star mergers and Neutrino-Driven Winds will be considered and their main differences as well.