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Nuclear reaction rates for the s-process

22–23 Feb 2024
Centro Congressi Partenope
Europe/Rome timezone

David Rapagnani

Session

Main s-process

22 Feb 2024, 09:30
Sala B (Centro Congressi Partenope)

Sala B

Centro Congressi Partenope

Via Partenope, 36, 80121 Napoli, Italy

Description

Info about main s-process

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  1. 1. The main component of the s-process
    Dr Oscar Straniero (INAF)
    22/02/2024, 09:30
  2. 2. Direct Measurement of 13C(α,n)16O cross section at LUNA
    Dr Giovanni Francesco Ciani (Istituto Nazionale di Fisica Nucleare)
    22/02/2024, 10:00

    The 13C(α,n)16O reaction is the main neutron sources for the weak s-process, responsible for the nucleosynthesis of about half of the elements heavier than iron. It takes place in thermally pulsing low mass AGB stars at about 90 MK, corresponding to a Gamow window between 140 - 230 keV. These energies are well below the Coulomb barrier. In last decades several direct and indirect measurements...

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  3. 3. 13C(α,n)160 with the Trojan Horse Method
    Dr Marco La Cognata (Istituto Nazionale di Fisica Nucleare)
    22/02/2024, 10:30

    More than ∼ 50% of nuclei with A ≥ 56 are produced by the s-process [1], a succes-sion of neutron captures slower than β-decay rates, constraining the nucleosynthesis path close to the stability valley. The neutron source feeding the s-process has been identified in the 13C(α, n)16O reaction taking place in asymptotic giant branch (AGB) stars. In this contribution, I will focus on the indirect...

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  4. 4. Deep Underground Laboratory Measurement of 13C(α,n)16O at JUNA
    Dr Bingshui Gao
    22/02/2024, 11:30

    The 13C(a,n)16O reaction is the main neutron source for the s-process in AGB stars. Meanwhile, this reaction is also believed to be the neutron source for the i-process although its astrophysical site is still unclear. Direct measurement of its cross section at astrophysical energies is challenging in above-ground laboratories due to the vast cosmic-ray induced background. Underground...

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  5. 5. 13C(α,n)16O and 22Ne(α,n)25Mg at the University of Notre Dame
    Dr Richard James Deboer
    22/02/2024, 12:00
  6. 6. Talk 7
  7. 7. Talk 8
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