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Nuclear Physics in Astrophysics - X

4–9 Sept 2022
CERN
Europe/Zurich timezone

Session

Monday - Session 3

5 Sept 2022, 14:00
500/1-001 - Main Auditorium (CERN)

500/1-001 - Main Auditorium

CERN

400
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Conveners

Monday - Session 3

  • Michael Paul

Presentation materials

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  1. 149. Neutron-induced cross section measurements using the Liquid Lithium Target at SARAF
    Moshe Friedman (The Hebrew University of Jerusalem)
    05/09/2022, 14:00
    Invited

    Neutron-induced reactions play an important role in several stellar nucleosynthesis scenarios. Experimental determination of their rates are limited by the available neutron flux at the relevant energies, sample size, especially in the case of unstable isotopes, and detection. The Soreq Applied Research Accelerator Facility (SARAF) enabled enhanced opportunities for such measurements by...

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  2. 54. Indirect study of 17O(a,n)20Ne and 17O(a,g)21Ne reactions via 17O(7Li,t)21Ne alpha-transfer reaction and its impact on the s-process in rotating poor-metal massive stars
    Dr Faïrouz Hammache (IJCLab Orsay)
    05/09/2022, 14:30
    Oral

    F. Hammache$^1$, P. Adsley$^{2,3,*}$, L. Lamia$^{4,5,6}$, D.~S. Harrouz$^1$, N. de Séréville$^{1}$, B. Bastin$^7$, T. Faestermann$^{8}$, C. Fougères$^7$, R. Hertenberger$^{9}$, M. La Cognata$^{5}$, A. Meyer$^{1}$, S. Palmerini$^{10,11}$, R.G. Pizzone$^{5}$, F. de Oliveira$^7$, S. Romano$^{4,5,6}$, A. Tumino$^{12,5}$, H.-F. Wirth$^{9}$

    $^1$ Université Paris-Saclay, CNRS/IN2P3, IJCLab,...

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  3. 119. Trap System for Measuring Neutron Capture Cross Section of Short-lived Isotopes
    Heinrich Wilsenach
    05/09/2022, 14:45
    Oral

    One of the current limitations of predicting the nuclear astrophysics r-process abundance is the lack of experimental data on neutron-capture cross-sections of radioactive neutron-rich isotopes. These cross-sections are also invaluable for nuclear reactions and nuclear structure in general. Their measurement is currently considered impossible due to the instability of the targets and...

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  4. 42. Direct measurement of $^{13}$C(α,n)$^{16}$O reaction towards its s-process Gamow peak
    Dr László Csedreki (Institute for Nuclear Research (ATOMKI), P.O. Box 51, HU-4001 Debrecen, Hungary)
    05/09/2022, 15:00
    Oral

    The $^{13}$C(α,n)$^{16}$O reaction is the prevalent neutron source for the main s-process, taking place in thermally pulsing low mass AGB stars. The direct measurement of this reaction at stellar temperature (~ 90 MK), corresponding to a Gamow window between 140 - 230 keV, has so far not been possible due to the very low cross section at these energies.
    The LUNA collaboration performed the...

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  5. 36. Stellar $s$-process neutron capture cross sections on $^A$Se and $^A$Ce
    Dr Moshe Tessler (Soreq Nuclear Research Center, Yavne, Israel 81800)
    05/09/2022, 15:15
    Oral

    Neutron-induced reactions remain at the forefront of experimental investigations for the understanding of stellar nucleosynthesis and chemical evolution of the Galaxy in the region of medium- and heavy-mass nuclides [1]. We report on measurements of the cross section of neutron capture reactions $^{74,80,82}$Se$(n,\gamma)$ and $^{138,140,142}$Ce$(n,\gamma)$ relevant, respectively, to the weak...

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