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View article: Fusion of 12C+28Si at deep sub-barrier energies
Fusion of 12C+28Si at deep sub-barrier energies Open
The existence of fusion hindrance is not well established in light heavy-ion systems. Studying slightly heavier cases allows extrapolating the trend to light systems of astrophysical interest. Fusion of 12C + 28Si has been measured down to…
View article: The advanced evolution of massive stars. I. New reaction rates for carbon and oxygen nuclear reactions
The advanced evolution of massive stars. I. New reaction rates for carbon and oxygen nuclear reactions Open
The nuclear rates for reactions involving ^12C and ^16O are key to computing the energy release and nucleosynthesis evolution of massive stars during their advanced burning phases. Ultimately, these burning rates shape the stellar structur…
View article: Solid target production for astrophysical research: the European target laboratory partnership in ChETEC-INFRA
Solid target production for astrophysical research: the European target laboratory partnership in ChETEC-INFRA Open
View article: Refining the deep sub-barrier <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi mathvariant="normal">C</mml:mi><mml:mprescripts/><mml:none/><mml:mn>12</mml:mn></mml:mmultiscripts><mml:mo>+</mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">C</mml:mi><mml:mprescripts/><mml:none/><mml:mn>12</mml:mn></mml:mmultiscripts></mml:mrow></mml:math> fusion excitation function with the STELLA apparatus
Refining the deep sub-barrier fusion excitation function with the STELLA apparatus Open
Purpose: We have investigated the cross section around the lowest direct coincident gamma-particle measurements, where previously only limits could be established with the aim of obtaining a detailed description of the excitation function.…
View article: Solid Target production for Astrophysical Reasearch: the European target laboratory partnership in ChETEC-INFRA
Solid Target production for Astrophysical Reasearch: the European target laboratory partnership in ChETEC-INFRA Open
The joint work of European target laboratories in the ChETEC-INFRA project is presented, to face the new experimental challenges of nuclear astrophysics. In particular, results are presented on innovative targets of 12,13C, 16O, and 19F th…
View article: Recent data on fusion far below the barrier for <sup>12</sup>C + <sup>28</sup>Si
Recent data on fusion far below the barrier for <sup>12</sup>C + <sup>28</sup>Si Open
Heavy-ion fusion reactions are essential to investigate the fundamental problem of quantum tunnelling of many-body systems in the presence of intrinsic degrees of freedom. Studying the fusion of light systems with Q > 0 and possibly identi…
View article: Massive star evolution with a new <sup>12</sup>C + <sup>12</sup>C nuclear reaction rate
Massive star evolution with a new <sup>12</sup>C + <sup>12</sup>C nuclear reaction rate Open
Context. Nuclear reactions drive stellar evolution and contribute to stellar and galactic chemical abundances. New determinations of the nuclear reaction rates in key fusion reactions of stellar evolution are now available, paving the way …
View article: Peridynamic numerical investigation of asymmetric strain-controlled fatigue behaviour using the kinetic theory of fracture
Peridynamic numerical investigation of asymmetric strain-controlled fatigue behaviour using the kinetic theory of fracture Open
View article: Spanish contribution to the development and application of probabilistic safety analysis: Experience and future challenges
Spanish contribution to the development and application of probabilistic safety analysis: Experience and future challenges Open
View article: Development of a Probabilistic Health Model Representing Variable Amplitude Fatigue Loading Damage in Austenitic Stainless Steel Nuclear Components
Development of a Probabilistic Health Model Representing Variable Amplitude Fatigue Loading Damage in Austenitic Stainless Steel Nuclear Components Open
View article: Recent Results on Direct Measurement of the \(^{12}\)C+\(^{12}\)C Fusion Cross section at Deep Sub-barrier Energies with STELLA
Recent Results on Direct Measurement of the \(^{12}\)C+\(^{12}\)C Fusion Cross section at Deep Sub-barrier Energies with STELLA Open
International audience
View article: Application of a ΔJ Approach for Thermal Fatigue Crack Growth Assessment on the Large Scale Yielding PACIFIC Experiment
Application of a ΔJ Approach for Thermal Fatigue Crack Growth Assessment on the Large Scale Yielding PACIFIC Experiment Open
Austenitic stainless steel large nuclear components, with high thicknesses, may experience cyclic Large Scale Yielding due to mechanical and thermal loadings during their service life. International codes and standards only provide inadequ…
View article: Examination of how properties of a fissioning system impact isomeric yield ratios of the fragments
Examination of how properties of a fissioning system impact isomeric yield ratios of the fragments Open
The population of isomeric states in the prompt decay of fission fragments - so-called isomeric yield ratios (IYRs) - is known to be sensitive to the angular momentum J that the fragment emerged with, and may therefore contain valuable inf…
View article: Carbon burning at stellar energies
Carbon burning at stellar energies Open
Fusion reactions with light nuclei play an essential role in understanding the energy production, the nucleosynthesis of chemical elements and the evolution of massive stars. The measurement of key fusion reactions at stellar energies is t…
View article: INCEFA-SCALE Project – Overview of the Modelling Plans
INCEFA-SCALE Project – Overview of the Modelling Plans Open
INCEFA-SCALE is a five-year project supported by the European Commission HORIZON2020 programme. It kicked off in September 2020 and is the successor to the INCEFA-PLUS programme. The objective is to continue work, advancing the ability to …
View article: Study of $$N=50$$ gap evolution around $$Z=32$$: new structure information for $${}^{82}$$Ge
Study of $$N=50$$ gap evolution around $$Z=32$$: new structure information for $${}^{82}$$Ge Open
View article: Numerical Investigation of Asymmetric Strain Controlled Fatigue Behaviour Using Kinetic Theory of Fracture and Peridynamics
Numerical Investigation of Asymmetric Strain Controlled Fatigue Behaviour Using Kinetic Theory of Fracture and Peridynamics Open
Numerical fatigue process modelling is complex and still open task. Discontinuity caused by the fatigue crack requires special finite element techniques based on additional parameters, which selection has a strong effect on simulation resu…
View article: Near-barrier fusion of weakly bound 6Li and 7Li nuclei with 59Co
Near-barrier fusion of weakly bound 6Li and 7Li nuclei with 59Co Open
Excitation functions for sub- and near-barrier total (complete + incomplete) fusion cross sections are presented for the [Formula Presented] reactions. Evaporation residues were identified by their characteristic [Formula Presented] rays a…
View article: Candidate superdeformed band in 28Si
Candidate superdeformed band in 28Si Open
Recent antisymmetrized molecular dynamics (AMD) calculations for 28Si suggest the presence of a superdeformed (SD) band with a dominant 24Mg+α clustering for its configuration, with firm predictions for its location and associated moment o…
View article: γ-ray spectroscopy of the A=23, T=1/2 nuclei 23Na and 23Mg: High-spin states, mirror symmetry, and applications to nuclear astrophysical reaction rates
γ-ray spectroscopy of the A=23, T=1/2 nuclei 23Na and 23Mg: High-spin states, mirror symmetry, and applications to nuclear astrophysical reaction rates Open
Background: Obtaining reaction rates for nuclear astrophysics applications is often limited by the availability of radioactive beams. Indirect techniques to establish reaction rates often rely heavily on the properties of excited states in…
View article: High-resolution spectroscopy of decay pathways in the 12C(12C,γ) reaction
High-resolution spectroscopy of decay pathways in the 12C(12C,γ) reaction Open
The decay branchings of a resonance in the 12C(12C,γ)24Mg reaction at Ec.m. = 8.0 MeV have been studied with high resolution using the Gammasphere array. Radiative capture residues were discriminated from scattered beam and the dominant ev…
View article: Analyse vibratoire : De l’identification d’un balourd à la classification des formes vibratoires de roulements et de moteurs
Analyse vibratoire : De l’identification d’un balourd à la classification des formes vibratoires de roulements et de moteurs Open
Les auteurs du présent article ont mis en place en Licence Professionnelle Acoustique et Vibrations Mention Acoustique et Environnement Sonore de l’Université de Montpellier un certain nombre de travaux pratiques mettant en jeu des procédé…
View article: A new <sup>12</sup>C+<sup>12</sup>C reaction rate: Impact on stellar evolution
A new <sup>12</sup>C+<sup>12</sup>C reaction rate: Impact on stellar evolution Open
Among the reactions driving stellar evolution during carbon burning, 12 C + 12 C fusion provides the key ingredients. This system reveals many resonances, but also regions with suppressed fusion cross-sections. The reaction was recently me…
View article: Extending the Hoyle-State Paradigm to <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">C</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>12</mml:mn></mml:mrow></mml:mmultiscripts><mml:mo>+</mml:mo><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">C</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>12</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math> Fusion
Extending the Hoyle-State Paradigm to Fusion Open
Carbon burning is a key step in the evolution of massive stars, Type 1a supernovae and superbursts in x-ray binary systems. Determining the ^{12}C+^{12}C fusion cross section at relevant energies by extrapolation of direct measurements is …
View article: Lifetime measurements of states of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">S</mml:mi><mml:mprescripts/><mml:none/><mml:mn>35</mml:mn></mml:mmultiscripts></mml:math>, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">S</mml:mi><mml:mprescripts/><mml:none/><mml:mn>36</mml:mn></mml:mmultiscripts></mml:math>, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">S</mml:mi><mml:mprescripts/><mml:none/><mml:mn>37</mml:mn></mml:mmultiscripts></mml:math>, and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">S</mml:mi><mml:mprescripts/><mml:none/><mml:mn>38</mml:mn></mml:mmultiscripts></mml:math> using the AGATA <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>γ</mml:mi></mml:math>-ray tracking spectrometer
Lifetime measurements of states of , , , and using the AGATA -ray tracking spectrometer Open
Lifetimes or lifetime limits of a small number of excited states of the sulfur isotopes with mass numbers A=35, 36, 37, and 38 have been measured using the differential recoil-distance method. The isotopes of sulfur were populated in binar…
View article: A new <sup>12</sup>C + <sup>12</sup>C nuclear reaction rate: Impact on stellar evolution
A new <sup>12</sup>C + <sup>12</sup>C nuclear reaction rate: Impact on stellar evolution Open
Context. By changing the internal composition of stars, nuclear reactions play a key role in their evolution and spur their contribution to the chemical evolution of galaxies. The STELLA collaboration recently carried out new direct measur…
View article: Direct Measurement of Carbon Fusion at Astrophysical Energies with Gamma-Particle Coincidences
Direct Measurement of Carbon Fusion at Astrophysical Energies with Gamma-Particle Coincidences Open
We present 12 C+ 12 C direct fusion measurements with STELLA UKFATIMA, that reach into the region of astrophysics interest relevant to massive stars ( M ⊙ ≈ 25) using self-supporting thin rotating carbon foils [1]. We demonstrate that dete…
View article: Environmental Fatigue Analysis of nuclear components within the framework of INCEFA-SCALE project
Environmental Fatigue Analysis of nuclear components within the framework of INCEFA-SCALE project Open
INCEFA-SCALE started in October 2020. The objective of this project is to improve the capacity to predict the lifetime of Nuclear Power Plant (NPP) components subjected to environmental assisted fatigue. The project starts off by analysing…
View article: A new $^{12}$C + $^{12}$C nuclear reaction rate: impact on stellar\n evolution
A new $^{12}$C + $^{12}$C nuclear reaction rate: impact on stellar\n evolution Open
This work presents new $^{12}$C + $^{12}$C reaction rates in the form of\nnumerical tables with associated uncertainty estimation, as well as analytical\nformulae that can be directly implemented into stellar evolution codes. This\narticle…
View article: Search for in-band transitions in the candidate superdeformed band in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Si</mml:mi><mml:mprescripts/><mml:none/><mml:mn>28</mml:mn></mml:mmultiscripts></mml:math>
Search for in-band transitions in the candidate superdeformed band in Open
Background: Superdeformed (SD) bands are suggested by theory around Ca-40 and in lighter alpha-conjugate nuclei such as Mg-24, Si-28, and S-32. Such predictions originate from a number of theoretical models including mean-field models and …