The Trojan Horse Method in Nuclear Astrophysics

Туміно, А.; Spitaleri, C.; Cherubini, S.; D’Agata, G.; Luca, Guardo Giovanni; Gulino, M.; Indelicato, I.; Cognata, M. La; Lamia, L.; Pizzone, R. G.; Gabriele, R.; Romano, S.; Letizia, Sergi Maria; Spartà, R.

doi:10.1051/epjconf/201818401016

Cited by 3 publications

(7 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For gammaray detection, an array of LaBr 3 (Ce) scintillator detectors has been employed. The results are in good agreement with the data reported by Jiang et al (2018) and Tumino et al (2018a), Tumino et al (2018b). However, a more prominent resonance has been observed around 3.8 MeV compared to other measurements (Spillane et al, 2007;Zickefoose et al, 2018).…”

Section: State-of-the-artsupporting

confidence: 92%

“…One is involved in reaction, while the other constituent cluster, called the spectator nucleus "s," is emitted without interacting with the system. For further information on the method, one could refer to Tumino et al (2018a) and Tumino et al (2018b). Using this technique, the 13 C( 6 Li, n 16 O)d reaction was studied in quasi-free kinematic conditions (the deuteron inside the 6 Li beam is considered as a spectator to the three-body reaction), as described in La Cognata et al (2013).…”

Section: State-of-the-artmentioning

confidence: 99%

“…The measurement was pushed down to 2.84 MeV and 2.96 MeV for the p and α channels, respectively; the results are in good agreement with other measurements using c Spillane et al (2007) and charged particle detection Zickefoose et al (2018), but with smaller uncertainties. Tumino et al (2018a) and Tumino et al (2018b) measured the cross-section of the 12 C( 12 C, p) 23 Na and 12 C( 12 C, α) 20 Ne reactions through the indirect THM. A 30 MeV beam was delivered on a natural carbon target; charged particles were detected through ΔE-E position-sensitive silicon detectors.…”

Section: State-of-the-artmentioning

confidence: 99%

See 2 more Smart Citations

The Study of Key Reactions Shaping the Post-Main Sequence Evolution of Massive Stars in Underground Facilities

Ferraro

Ciani

Boeltzig

et al. 2021

Front. Astron. Space Sci.

View full text Add to dashboard Cite

The chemical evolution of the Universe and several phases of stellar life are regulated by minute nuclear reactions. The key point for each of these reactions is the value of cross-sections at the energies at which they take place in stellar environments. Direct cross-section measurements are mainly hampered by the very low counting rate and by cosmic background; nevertheless, they have become possible by combining the best experimental techniques with the cosmic silence of an underground laboratory. In the nineties, the LUNA (Laboratory for Underground Nuclear Astrophysics) collaboration opened the era of underground nuclear astrophysics, installing first a homemade 50 kV and, later on, a second 400 kV accelerator under the Gran Sasso mountain in Italy: in 25 years of experimental activity, important reactions responsible for hydrogen burning could have been studied down to the relevant energies thanks to the high current proton and helium beams provided by the machines. The interest in the next and warmer stages of star evolution (i.e., post-main sequence and helium and carbon burning) drove a new project based on an ion accelerator in the MV range called LUNA-MV, able to deliver proton, helium, and carbon beams. The present contribution is aimed to discuss the state of the art for some selected key processes of post-main sequence stellar phases: 12C(α,γ)16O and 12C+12C are fundamental for helium and carbon burning phases, and 13C(α,n)16O and 22Ne(α,n)25Mg are relevant to the synthesis of heavy elements in AGB stars. The perspectives opened by an underground MV facility will be highlighted.

show abstract

Section: State-of-the-artsupporting

confidence: 92%

Section: State-of-the-artmentioning

confidence: 99%

Section: State-of-the-artmentioning

confidence: 99%

See 1 more Smart Citation

The Study of Key Reactions Shaping the Post-Main Sequence Evolution of Massive Stars in Underground Facilities

Ferraro

Ciani

Boeltzig

et al. 2021

Front. Astron. Space Sci.

View full text Add to dashboard Cite

show abstract

“…4. which are challenging and are being pursued currently [36][37][38]. The predicted smooth S-factor around the Gamow peak (∼ 1.5 MeV) would moderately change the present abundance distributions in type-Ia supernova [14], and would require a closer look at the hydrodynamics of superbursts to enhance the energy output [15].…”

Section: Numerical Details and Resultsmentioning

confidence: 99%

Characterizing the astrophysical S factor for C12+C12 fusion with

Díaz-Torres

Wiescher

2018

Phys. Rev. C

View full text Add to dashboard Cite

A quantitative study of the astrophysically important sub-barrier fusion of 12 C+ 12 C is presented.Low-energy collisions are described in the body-fixed reference frame using wave-packet dynamics within a nuclear molecular picture. A collective Hamiltonian drives the time propagation of the wave-packet through the collective potential-energy landscape. The fusion imaginary potential for specific dinuclear configurations is crucial for understanding the appearance of resonances in the fusion cross section. The theoretical sub-barrier fusion cross sections explain some observed resonant structures in the astrophysical S-factor. These cross sections monotonically decline towards stellar energies. The structures in the data that are not explained are possibly due to cluster effects in the nuclear molecule, which are to be included in the present approach. 25.70.Jj, 26.20.Np

show abstract

“…In the future, the model here discussed could be improved to include Debye-like screening and, possibly, to allow a comparison of its predictions with existing experimental data and simulations. For instance, [2] reports a reduction of the d + d cross-section extracted from Coulomb explosion measurements, with respect to conventional fixed-target experiments and Trojan Horse Method [7] measurements. The mechanism here described may be sufficient to explain that result, although further studies are needed to deduce the amount of net charge required to this end.…”

Section: Resultsmentioning

confidence: 99%

How do charged environments affect low-energy fusion rates? Screening effects in laser-induced non-neutral plasmas

Perrotta¹,

Bonasera²

2020

EPJ Web Conf.

View full text Add to dashboard Cite

Globally charged environments can modify the rates of nuclear reactions at the energies relevant for nuclear fusion energy production. This issue was addressed using the screening potential approach, deriving approximate analytical results for some scenarios of interest. The developed model predicts that fusion is hindered for reactions between thermal nuclei, while an enhancement is expected for secondary reactions and cluster Coulomb explosion beam-target reactions.

show abstract

The Trojan Horse Method in Nuclear Astrophysics

Cited by 3 publications

References 45 publications

The Study of Key Reactions Shaping the Post-Main Sequence Evolution of Massive Stars in Underground Facilities

The Study of Key Reactions Shaping the Post-Main Sequence Evolution of Massive Stars in Underground Facilities

Characterizing the astrophysical S factor for C12+C12 fusion with

How do charged environments affect low-energy fusion rates? Screening effects in laser-induced non-neutral plasmas

Contact Info

Product

Resources

About