Conveners
Wednesday - Session 3
- Cesar Domingo Pardo (Univ. of Valencia and CSIC (ES))
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Carlo Bruno (The University of Edinburgh)07/09/2022, 14:00Invited
Storage rings offer a unique approach to measure nuclear reactions using stored radioisotope beams impinging on ultra-pure internal targets. This approach has been pioneered at the ESR storage ring in GSI Laboratory (Germany).
The newly commissioned CRYRING, part of FAIR Phase-0, opens up new and ground-breaking possibilities for nuclear astrophysics at storage rings. CRYRING is the first...
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Elisso Stamati (University of Ioannina (GR))07/09/2022, 14:30Oral
Half the atomic nuclei heavier than iron are created through the s-process, i.e. a series of neutron captures and subsequent beta decays. Accordingly, the accuracy of neutron capture rates is of significant importance for these astrophysical calculations and for our understanding of the observed isotopic abundances [1]. In particular, fundamental input can be provided through the determination...
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Mr Carlos Paradela Dobarro (European Commission - Joint Resesrch Centre)07/09/2022, 14:45Oral
JRC Geel operates a neutron time-of-flight facility, based on an electron accelerator. At 11 flight paths experiments can be performed simultaneously, with available flight paths ranging from 5m to 400 m. Experimental setups to determine total and reaction cross sections ( capture, elastic and inelastic shattering, fission and charged particle reactions ) are available. Furthermore, during ...
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Denise Piatti07/09/2022, 15:00Oral
The $^{17}O(p,\gamma)^{18}F$ reaction plays a crucial role in the hydrogen burning phases of different stellar scenarios. For example, at temperature of interest for AGB nucleosynthesis (20 MK< T < 80 MK) the main contribution to the astrophysical reaction rate come from the poorly constrained ER = 65 keV resonance. The strength of this resonance is presently determined only through indirect...
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Ms Shahina (University of Notre Dame)07/09/2022, 15:15Oral
The $^{22}\rm{Ne}(\alpha,\gamma)^{26}\rm{Mg}$ is an important reaction in stellar helium burning environments as it competes directly with one of the main neutron source for the s-process $^{22}\rm{Ne}(\alpha,n)^{25}\rm{Mg}$ reaction. The reaction rate of the $^{22}\rm{Ne}(\alpha,\gamma)^{26}\rm{Mg}$ reaction is dominated by low energy energy resonances at $E_{R}^{lab}$ = 0.65, 0.83 MeV. The...
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James deBoer (University of Notre Dame)07/09/2022, 15:30Oral
$(\alpha,n)$ reactions provide a source for neutrons in many stellar environments, fueling the production of the heavy elements. The key $(\alpha,n)$ reactions for the $s$-process are thought to be $^{13}$C and $^{22}$Ne, but reactions on other nuclei, including $^{17,18}$O and $^{24,25}$Mg may also play important roles. In addition, $(\alpha,n)$ reactions are sources of background for...
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Artemis Spyrou07/09/2022, 15:45Oral
In recent years the plethora of new astronomical observations has shown that the synthesis of heavy elements cannot be explained just by the three traditional processes (s, r, and p). For this reason, new processes have been proposed that are able to explain these new observations. The ``intermediate'' or i process is one such process and corresponds to neutron densities and time scales...
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