Calculation of the nuclear vertex constant (asymptotic normalization coefficient) for the virtual decay 6Li → α + d on the basis of the three-body model and application of the result in describing the astrophysical nuclear reaction d(α, γ)6Li at ultralow energies

Blokhintsev, L.D.; Igamov, S. B.; Nishonov, M.; Yarmukhamedov, R.

doi:10.1134/s1063778806030069

Cited by 5 publications

(3 citation statements)

References 39 publications

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“…As one can see in this figure, all the calculations shown -independent of their very different model assumptions-yield very similar curves. We have not included the theory of Blokhintsev et al [42]) because it was specifically tuned to approach the experimental data of Ref. [21].…”

Section: Type Of Interactionmentioning

confidence: 99%

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High-energy break-up of 6Li as a tool to study the Big-Bang nucleosynthesis reaction 2H(alpha,gamma)6Li

Hammache,

Heil,

Typel

et al. 2010

Preprint

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The recently claimed observations of non-negligible amounts of 6 Li in old halo stars have renewed interest in the Big-Bang Nucleosynthesis (BBN) of 6 Li. One important ingredient in the predicted BBN abundance of 6 Li is the low-energy 2 H(α,γ) 6 Li cross section. Up to now, the only available experimental result for this cross section showed an almost constant astrophysical S-factor below 400 keV, contrary to theoretical expectations. We report on a new measurement of the 2 H(α,γ) 6 Li reaction using the break-up of 6 Li at 150 A MeV. Even though we cannot separate experimentally the Coulomb contribution from the nuclear one, we find clear evidence for Coulomb-nuclear interference by analyzing the scattering-angular distributions. This is in-line with our theoretical description which indicates a drop of the S24-factor at low energies as predicted also by most other models. Consequently, we find even lower upper limits for the calculated primordial 6 Li abundance than before.

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Section: Type Of Interactionmentioning

confidence: 99%

“…It is therefore not very meaningful to tune theoretical models in order to improve their agreement with the 26 A MeV data as was done in Ref. [42].…”

Section: Comparison With Other CD Experimentsmentioning

confidence: 99%

High-energy break-up of 6Li as a tool to study the Big-Bang nucleosynthesis reaction 2H(alpha,gamma)6Li

Hammache,

Heil,

Typel

et al. 2010

Preprint

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“…[5,66,67]. However, we note that ANCs have clearly evolved (and decreased) over time, as the papers [66,[68][69][70] show. We note that the ab initio computation by Nollett et al [20] reports an ANC of 2.28 ± 0.02 fm −1/2 (in agreement with recent cluster models and our result), while Hupin et al [22] found a larger ANC of about 2.7 fm −1/2 .…”

Section: Resultsmentioning

confidence: 53%

Low-energy bound states, resonances, and scattering of light ions

Luna

Papenbrock

2019

Phys. Rev. C

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We describe bound states, resonances and elastic scattering of light ions using a δ-shell potential. Focusing on low-energy data such as energies of bound states and resonances, charge radii, asymptotic normalization coefficients, effective-range parameters, and phase shifts, we adjust the two parameters of the potential to some of these observables and make predictions for the nuclear systems d + α, 3 He + α, 3 He + α, α + α, and p + 16 O. We identify relevant momentum scales for Coulomb halo nuclei and propose how to apply systematic corrections to the potentials. This allows us to quantify statistical and systematic uncertainties. We present a constructive criticism of Coulomb halo effective field theory and compute the unknown charge radius of 17 F.

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Microscopic description of the H(α,γ)2Li6 radiative capture reaction

Solovyev

2022

Phys. Rev. C

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Calculation of the nuclear vertex constant (asymptotic normalization coefficient) for the virtual decay 6Li → α + d on the basis of the three-body model and application of the result in describing the astrophysical nuclear reaction d(α, γ)6Li at ultralow energies

Cited by 5 publications

References 39 publications

High-energy break-up of 6Li as a tool to study the Big-Bang nucleosynthesis reaction 2H(alpha,gamma)6Li

High-energy break-up of 6Li as a tool to study the Big-Bang nucleosynthesis reaction 2H(alpha,gamma)6Li

Low-energy bound states, resonances, and scattering of light ions

Microscopic description of the H(α,γ)2Li6 radiative capture reaction

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