Excitation Curves for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>α</mml:mi></mml:math>Particles from<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">B</mml:mi></mml:mrow><mml:mrow><mml:mn>11</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>Bombarded with Protons

Beckman, O.; Huus, Torben; Zupančič, Č.

doi:10.1103/physrev.91.606

Cited by 57 publications

(13 citation statements)

References 10 publications

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“…In Figure 5 plot of crosssection versus energy for p-11 B is obtained with the set of parameters presented in the fifth row of Table 1. The plot exhibits a sharp resonance peak near 760 keV with a peak fusion cross-section value of about 0.62 barn which in excellent agreement with the results reported by Beckman et al 1953 [26] who reported a peak cross-section of about 0.623 barn near 757 keV. The astrophysical Sfunction depicted in the left panels of Figures 4 and 5 indicate a clear resonance behavior for both the chosen data sets.…”

Section: Resultssupporting

confidence: 89%

Study of fusion reactions of light nuclei at low energies using complex nucleon-nucleus potential function

Khan¹,

Mondal²,

Alam³

et al. 2021

Preprint

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Nuclear fusion reactions, at energies, far below the Coulomb barrier play a significant role in the synthesis of light elements in the primordial nucleosynthesis as well as in the interior of compact stellar objects. Many different kinds of nuclear reactions are occurring simultaneously inside the stellar core depending upon the density and temperature conditions of the nuclear plasma along with other relevant parameters of these stars. Nuclear fusion reactions in the energy range (E ∼ 1 eV to few keV) can be explained successfully by quantum mechanical tunneling through the mutual Coulomb barrier of interacting nuclei. The measurement of the cross-sections at extremely low energy is quite difficult because of the larger width of the Coulomb barrier, which results in a very small value of the reaction cross-section. Hence, any improvement in the data on astrophysical S-factors for the light nuclei fusion may give a better picture of the elemental abundance in nucleosynthesis. In this work, we have theoretically investigated the energy dependence of fusion cross-sections and astrophysical S-factors for fusion reaction of light nuclei like D-D and p-11 B using complex Gaussian nuclear potential with adjustable depth and range parameters plus the mutual Coulomb interaction of the interacting nuclei. Numerical computation of the observables is done in the framework of the selective resonant tunneling model approach. The results of our calculation are compared with those found in the literature.

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Section: Resultssupporting

confidence: 89%

Study of fusion reactions of light nuclei at low energies using complex nucleon-nucleus potential function

Khan¹,

Mondal²,

Alam³

et al. 2021

Preprint

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show abstract

“…From an analysis of the angular distributions, total cross sections and energy dependent Legendre polynomial coefficients have been extracted from the data. Disagreements between previous measurements [9,6,7,10,11,12] on both the magnitude and energy dependence of the cross section have been resolved.…”

Section: Resultsmentioning

confidence: 67%

“…As discussed in the introduction, there are several normalization issues between the different datasets [9,6,7,10,11,12]. In order to shed light on this, the ratios between the cross sections of other datasets and the present have been computed.…”

Section: Resultsmentioning

confidence: 99%

Resolving the $${}^{11}\hbox {B}{(p,\alpha _{0})}$$ cross-section discrepancies between 0.5 and 3.5 MeV

et al. 2020

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The reaction 11 B(p, 3α) is relevant for fields as diverse as material science, nuclear structure, nuclear astrophysics, and fusion science. However, for the channel proceeding via the ground state of 8 Be, the available cross-section data shows large discrepancies of both normalization and energy scale. The present paper reports on a measurement of the 11 B(p, α0) cross section using an array of modern large area segmented silicon detectors and low beam current on an enriched thin target with the aim of resolving the discrepancies amongst previous measurements.PACS. PACS-key discribing text of that key -PACS-key discribing text of that key

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“…Complementary to these measurements, Friebel et al directly measured Γ γ0 = 0.346(41) eV using inelastically scattered electrons [10], while Cecil et al have measured the relative yield of γ rays and charged particles; Γ γ0 /Γ α = 6.7(3) × 10 −5 and Γ γ1 /Γ α = 2.0(3) × 10 −3 [8]. Becker et al [6] 2.12 ± 5% 69.6 ± 5% 3 33(2) 5.3(2) Laursen et al [7] 19.6(19) 1 The authors note that the α particles were "barely detectable" [2]. This result will be disregarded.…”

Section: Introductionmentioning

confidence: 99%

The partial widths of the 16.1 MeV 2+ resonance in 12C

Münch

Fynbo

2018

Eur. Phys. J. A

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The 16.1 MeV 2 + resonance in 12 C situated slightly above the proton threshold can decay by proton-, α-, and γ emission. The partial width for proton emission cannot be directly measured due to the low proton energy and the small branching ratio. Instead it must be indirectly derived from other observables. However, due to several inconsistent data the derived partial width varies by almost a factor 2 dependent on the data used. Here we trace the majority of this inconsistency to different measurements of the (p, α) cross sections. We have remeasured this cross section using modern large area silicon strip detectors allowing to measure all final state particles, which circumvents a normalization issue affecting some of the previous measurements. Based on this we determine Γp = 21.0(13) eV. We discuss the implications for other observables related to the 16.1 MeV 2 + resonance and for isospin symmetry in the A = 12 system. In addition, we conclude that the dataset currently used for the NACRE and NACRE II evaluation of the 11 B(p, 3α) reaction should be scaled by a factor of 2/3. This impacts the reaction rate accordingly.PACS. 23.20.+e α decay -27.20.+n Properties of specific nuclei listed by mass ranges; 6 ≤ A ≤ 19

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Excitation Curves forαParticles fromB11Bombarded with Protons

Cited by 57 publications

References 10 publications

Study of fusion reactions of light nuclei at low energies using complex nucleon-nucleus potential function

Study of fusion reactions of light nuclei at low energies using complex nucleon-nucleus potential function

Resolving the $${}^{11}\hbox {B}{(p,\alpha _{0})}$$ cross-section discrepancies between 0.5 and 3.5 MeV

The partial widths of the 16.1 MeV 2+ resonance in 12C

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