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Nuclear Physics in Astrophysics - X

4–9 Sept 2022
CERN
Europe/Zurich timezone

Session

Tuesday - Session 3

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

500/1-001 - Main Auditorium

CERN

400
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Conveners

Tuesday - Session 3

  • Iris Dillmann

Presentation materials

There are no materials yet.

  1. 144. Mass measurements and studies for the r process at IGISOL
    Anu Kankainen
    06/09/2022, 14:00
    Invited

    The Ion Guide Isotope Separator On-Line (IGISOL) facility [1] in the JYFL Accelerator Laboratory at the University of Jyväskylä offers plenty of opportunities for r-process studies. At IGISOL, neutron-rich nuclei relevant for the r process have been typically produced using proton-induced fission on natural uranium target. Recently, multinucleon-transfer (MNT) reactions to produce neutron-rich...

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  2. 12. Astrophysical impact of new experimental data of nuclei around the 78Ni
    Alvaro Tolosa Delgado (University of Jyvaskyla (FI))
    06/09/2022, 14:30
    Oral

    How elements are made in the Universe is an open long-standing question. Several processes are invoked to explain the observed elemental abundances in our Solar System [1] and in our galaxy [2].  
    Complex astrophysical simulations are used to study the origin of the heavy elements and quantify the contribution of the r-process to the observed elemental abundances (see e.g. [3]). The r-process...

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  3. 35. Constraining nucleosythesis in neutrino-driven winds using the impact of (α, xn) reaction rates
    Dr Thanassis Psaltis (TU Darmstadt)
    06/09/2022, 14:45
    Oral

    The lighter heavy elements of the first r-process peak, between strontium and silver, can be synthesized in the moderately neutron rich neutrino–driven ejecta of either core–collapse supernovae or neutron star mergers via the weak r–process [1]. This nucleosynthesis scenario exhibits uncertainties from the absence of experimental data from $(\alpha,xn)$ reactions on neutron–rich nuclei, which...

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  4. 67. r-Process Radioisotopes from Near-Earth Supernovae and Kilonovae
    Xilu Wang
    06/09/2022, 15:00
    Oral

    The astrophysical sites where 𝑟-process elements are synthesized remain mysterious: it is clear that neutron-star-mergers (kilonovae, KNe) contribute, and some classes of core-collapse supernovae (SNe) are also possible sources of at least the lighter 𝑟-process species. The discovery of 60Fe on the Earth and Moon implies that one or more astrophysical explosions have occurred near the Earth...

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  5. 41. First measurement of the 86Kr(α,n)89Sr reaction cross section using inverse kinematics at relevant energies for the weak r-process
    Cameron Angus (University of York / TRIUMF)
    06/09/2022, 15:15
    Oral

    The r-process has been shown to be robust in reproducing the abundance distributions of heavy elements seen in ultra-metal poor stars. In contrast, observations of elements in the range 36 ≤ Z ≤ 47 display overabundances relative to r-process model predictions [1]. A proposed solution to this discrepancy is an additional source of early nucleosynthesis that preferentially produces the lighter...

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