Nuclear Astrophysics at the Canfranc Underground Laboratory, 2nd CUNA Workshop

Contribution List

2. Astrophysical production of 146Sm isotope

Prof. Cristiana Oprea (JINR)

Astrophysical production of 146Sm isotope

6. Available know-how for possible (p, gamma) and (alpha, gamma) calorimeter studies at Canfranc

Alejandro ALGORA (IFIC (CSIC-Uni. Valencia))

The study of (p, gamma) and (alpha, gamma) reactions is fundamental for the understanding of many stellar nucleosynthesis processes. Conventionally several gamma detection techniques are used for measurements of radiative capture cross-sections. One possibility is the use of the activation technique. Other alternatives involve the direct detection of gamma rays emitted of the final nucleus...

7. Capabilities of the CIEMAT Nuclear Innovation Unit in relation to a Nuclear Astrophysics Program at the Canfranc Underground Laboratory

Dr Daniel Cano Ott (CIEMAT)

The Nuclear Innovation Unit at CIEMAT is a research group with large experience in Monte Carlo simulation of reactors and nuclear facilities with the MCNPX code. Several researchers of the group are members of the GEANT4 collaboration and are responsible of the processing and maintenance of neutron and charged particle nuclear data libraries. From the experimental point of view, several...

3. Cross sections of neutron reactions in S-Cl-Ar region in the s-process of nucleosynthesis

Prof. Cristiana Oprea (JINR)

Cross sections of neutron reactions in S-Cl-Ar region in the s-process of nucleosynthesis

8. d(α,γ) REACTION MEASUREMENT AT LUNA

Davide Trezzi

The amount of 6Li produced during the Big Bang Nucleosynthesis (BBN) era can be theoretically estimated on the basis of cosmological and nuclear astrophysics knowledge [1]. The latter strongly depends on the measurement of the nuclear cross section of the processes involved in the production and destruction of 6Li during the first stages of the Universe. Whereas the destruction process cross...

0. Direct measurement of the 22Ne(p,g)23Na reaction cross section at LUNA

Mr Federico Ferraro (INFN - National Institute for Nuclear Physics)

The $^{22}\mathrm{Ne}(p,\gamma)^{23}\mathrm{Na}$ reaction takes part in the NeNa cycle of hydrogen burning, influencing the production of elements between $^{20}\mathrm{Ne}$ and $^{27}\mathrm{Al}$ in red giant stars, asymptotic giant stars, classical novae and type Ia supernovae. The $^{22}\mathrm{Ne}(p,\gamma)^{23}\mathrm{Na}$ reaction rate is very uncertain because of a large number of...

10. Experience with the AIFIRA accelerator and 16O+16O reactions

Teresa Kurtukian Nieto (Centre National de la Recherche Scientifique (FR))

The heavy ion fusion reaction ¹⁶O+ ¹⁶O is an important reaction in nuclear astrophysics since it influences not only the nucleosynthesis but also the subsequent stellar evolution [1]. At present, this reaction has only been measured down to energies around 6.5 MeV that are higher than the energies of astrophysical interest. The main reasons for this are limitations in...

1. Measurement of the 23Na(a,p)26Mg cross section at astrophysically relevant energies

Alan Michael Howard (Aarhus University (DK))

Observation of $^{26}$Al in the galactic medium, via decay of its daughter nucleus $^{26}$Mg, has provided direct evidence for ongoing nucleosynthesis in the galaxy [1]. While the main sites for $^{26}$Al production are still uncertain, the C/Ne convective shell within massive stars is a prime candidate. Large-scale network calculations have been reported which assess the impact of various...

9. Nuclear Astrophysics: ground and underground experiments

Jordi José (UPC Barcelona) Many stars form binary or multiple systems, with a fraction hosting one or two degenerate objects (white dwarfs and/or neutron stars) in short-period orbits, such that mass transfer episodes onto the degenerate component ensue. This scenario is the framework for a suite of violent stellar events, such as type Ia supernovae, classical novae, X-ray bursts, or...

5. The Canfranc Underground Nuclear Astrophysics project

Luis M Fraile (Universidad Complutense (ES))

The direct measurement of reaction cross-sections of stellar nuclear reactions is hindered by experimental difficulties, particularly the very small cross-section values at the Gamow peak and the high background arising from the cosmic ray interactions. At the Earth's surface the low signal to background ratio can be overcome up to a certain limit by active and passive shielding and by a...

4. The fluorine production in AGB stars: observational and theoretical problems

Dr Carlos Abia (Universidad de Granada)

The origin of fluorine is a longstanding problem in nuclear astrophysics. Asymptotic Giant Branch (AGB) stars and core collapse supernovae are accepted to be the most important contributors to the Galactic fluorine production, although only in AGB stars there is observational evidence of its production. Nevertheless, extant nucleosynthesis models overestimate the fluorine production with the...