Seminarium Fizyki Jądra Atomowego
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2020-04-30 (10:15) 
dr Aleksandra Gawlik (Uniwersytet Łódzki)
Radiative neutron capture cross section measurement of germanium isotopes at the n_TOF CERN facility and its relevance for stellar nucleosynthesis. link do seminarium: https://meet.google.com./afb-cwio-wum
Stellar nucleosynthesis is the name given to the nuclear reactionstaking place in stars to create the nuclei of the heavier elements. Theradiative neutron capture reactions (n, γ) in stars are responsible forforming about 99% of the elemental abundances heavier than Fe. Theneutron capture cross section on Ge affects the abundances produced inthis process for a number of heavier isotopes up to a mass number of A =90. Additionally, neutron capture on Ge is of interest for lowbackground experiments involving Ge detectors.
Measurements were performed at the n TOF facility via the time-of-flighttechnique, enabling neutron spectrometry. Excellent time resolutionallows to determine the neutron resonance parameters up to hundreds ofkeV and averaged cross section calculated for neutron energies at starshelps to predict the s-abundances in the solar system.
link do instrukcji: https://www.fuw.edu.pl/~jt/instrukcja_googlemeet.html
Measurements were performed at the n TOF facility via the time-of-flighttechnique, enabling neutron spectrometry. Excellent time resolutionallows to determine the neutron resonance parameters up to hundreds ofkeV and averaged cross section calculated for neutron energies at starshelps to predict the s-abundances in the solar system.
link do instrukcji: https://www.fuw.edu.pl/~jt/instrukcja_googlemeet.html