Publications (18)
Improved Direct Measurement of the 64.5 keV Resonance Strength in the 17O(p,a)14N Reaction at LUNA
C. G. Bruno, D. A. Scott, M. Aliotta +32
The O(p,)N reaction plays a key role in various astrophysical scenarios, from asymptotic giant branch stars to classical novae. It affects the synthesis of rare i…
A new study of the Ne(p,)Na reaction deep underground: Feasibility, setup, and first observation of the 186 keV resonance
F. Cavanna, R. Depalo, M. -L. Menzel +28
The Ne(p,)Na reaction takes part in the neon-sodium cycle of hydrogen burning. This cycle is active in asymptotic giant branch stars as well as in novae and contr…
Three new low-energy resonances in the Ne(p,)Na reaction
F. Cavanna, R. Depalo, M. Aliotta +31
The Ne(p,)Na reaction takes part in the neon-sodium cycle of hydrogen burning. This cycle affects the synthesis of the elements between Ne and Al in…
Effect of beam energy straggling on resonant yield in thin gas targets: The cases Ne(p,γ)Na and N(p,γ)O
D. Bemmerer, F. Cavanna, R. Depalo +25
When deriving resonance strengths using the thick-target yield approximation, for very narrow resonances it may be necessary to take beam energy straggling into account. This appli…
Neutron-induced background by an alpha-beam incident on a deuterium gas target and its implications for the study of the 2H(alpha,gamma)6Li reaction at LUNA
M. Anders, D. Trezzi, A. Bellini +26
The production of the stable isotope Li-6 in standard Big Bang nucleosynthesis has recently attracted much interest. Recent observations in metal-poor stars suggest that a cosmolog…
A new approach to monitor 13C-targets degradation in situ for 13C(alpha,n)16O cross-section measurements at LUNA
G. F. Ciani, L. Csedreki, J. Balibrea-Correa +46
Direct measurements of reaction cross-sections at astrophysical energies often require the use of solid targets able to withstand high ion beam currents for extended periods of tim…
Direct capture cross section and the = 71 and 105 keV resonances in the Ne()Na reaction
F. Ferraro, M. P. Takács, D. Piatti +41
The Ne()Na reaction, part of the neon-sodium cycle of hydrogen burning, may explain the observed anticorrelation between sodium and oxygen abundances in globula…
A high-efficiency gas target setup for underground experiments, and redetermination of the branching ratio of the 189.5 keV resonance
F. Ferraro, M. P. Takács, D. Piatti +42
The experimental study of nuclear reactions of astrophysical interest is greatly facilitated by a low-background, high-luminosity setup. The Laboratory for Underground Nuclear Astr…
Prospects for measuring the gravitational free-fall of antihydrogen with emulsion detectors
AEgIS Collaboration, S. Aghion, O. Ahlén +68
The main goal of the AEgIS experiment at CERN is to test the weak equivalence principle for antimatter. AEgIS will measure the free-fall of an antihydrogen beam traversing a moiré…
Setup commissioning for an improved measurement of the D(p,gamma)3He cross section at Big Bang Nucleosynthesis energies
V. Mossa, K. Stöckel, F. Cavanna +44
Among the reactions involved in the production and destruction of deuterium during Big Bang Nucleosynthesis, the deuterium-burning D(p,gamma)3He reaction has the largest uncertaint…
Ne and Na ejecta from intermediate-mass stars: The impact of the new LUNA rate for Ne(p,)Na
A. Slemer, P. Marigo, D. Piatti +36
We investigate the impact of the new LUNA rate for the nuclear reaction NeNa on the chemical ejecta of intermediate-mass stars, with particular focus on the the…
Positronium signature in organic liquid scintillators for neutrino experiments
D. Franco, G. Consolati, D. Trezzi
Electron anti-neutrinos are commonly detected in liquid scintillator experiments via inverse beta decay, by looking at the coincidence between the reaction products, neutron and po…
The impact of the revised ON reaction rate on O stellar abundances and yields
O. Straniero, C. G. Bruno, M. Aliotta +33
Context. Material processed by the CNO cycle in stellar interiors is enriched in 17O. When mixing processes from the stellar surface reach these layers, as occurs when stars become…
Direct measurement of low-energy Ne(p,)Na resonances
R. Depalo, F. Cavanna, M. Aliotta +30
The Ne(p,)Na reaction is the most uncertain process in the neon-sodium cycle of hydrogen burning. At temperatures relevant for nucleosynthesis in asymptotic giant…
LUNA: Status and Prospects
C. Broggini, D. Bemmerer, A. Caciolli +1
The essential ingredients of nuclear astrophysics are the thermonuclear reactions which shape the life and death of stars and which are responsible for the synthesis of the chemica…
Origin of meteoritic stardust unveiled by a revised proton-capture rate of O
M. Lugaro, A. I. Karakas, C. G. Bruno +34
Stardust grains recovered from meteorites provide high-precision snapshots of the isotopic composition of the stellar environment in which they formed. Attributing their origin to…
Preparation and characterisation of isotopically enriched TaO targets for nuclear astrophysics studies
A. Caciolli, D. A. Scott, A. Di Leva +33
The direct measurement of reaction cross sections at astrophysical energies often requires the use of solid targets of known thickness, isotopic composition, and stoichiometry that…
First Direct Measurement of the ^{17}O(p,γ)^{18}F Reaction Cross-Section at Gamow Energies for Classical Novae
D. A. Scott, A. Caciolli, A. DiLeva +29
Classical novae are important contributors to the abundances of key isotopes, such as the radioactive ^{18}F, whose observation by satellite missions could provide constraints on n…