Precision study of ground state capture in the 14N(p,gamma)15O reaction

Abstract

The rate of the hydrogen-burning carbon-nitrogen-oxygen (CNO) cycle is controlled by the slowest process, 14N(p,gamma)15O, which proceeds by capture to the ground and several excited states in 15O. Previous extrapolations for the ground state contribution disagreed by a factor 2, corresponding to 15% uncertainty in the total astrophysical S-factor. At the Laboratory for Underground Nuclear Astrophysics (LUNA) 400 kV accelerator placed deep underground in the Gran Sasso facility in Italy, a new experiment on ground state capture has been carried out at 317.8, 334.4, and 353.3 keV center-of-mass energy. Systematic corrections have been reduced considerably with respect to previous studies by using a Clover detector and by adopting a relative analysis. The previous discrepancy has been resolved, and ground state capture no longer dominates the uncertainty of the total S-factor.

arXiv commentPhys. Rev. C, rapid comm., accepted

References in corpus (11)

• Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory
• 10,000 Standard Solar Models: a Monte Carlo Simulation
• S-factor of 14N(p,gamma)15O at astrophysical energies
• First real time detection of Be7 solar neutrinos by Borexino
• The solar chemical composition
• First measurement of the 14N(p,gamma)15O cross section down to 70 keV
• Direct measurement of the 14N(p,g)15O S-factor
• Feasibility of low energy radiative capture experiments at the LUNA underground accelerator facility
• Lifetime measurement of the 6792 keV state in 15O, important for the astrophysical S factor extrapolation in 14N(p,g)15O
• Solar Neutrinos: Models, Observations, and New Opportunities
• Ground state capture in ${}^{14}$N(p,$\gamma$)${}^{15}$O studied above the 259 keV resonance at LUNA

Cited by in corpus (43)

• Solar fusion cross sections II: the pp chain and CNO cycles
• NACRE II: an update of the NACRE compilation of charged-particle-induced thermonuclear reaction rates for nuclei with mass number $A<16$
• New Solar Composition: The Problem With Solar Models Revisited
• Solar models with accretion. I. Application to the solar abundance problem
• Stellar Models with Enhanced Abundances of C, N, O, Ne, Na, Mg, Si, S, Ca, and Ti, in Turn, at Constant Helium and Iron Abundances
• Bayesian analysis of ages, masses, and distances to cool stars with non-LTE spectroscopic parameters
• The First APOKASC Catalog of Kepler Dwarf and Subgiant Stars
• Distance Scale Zero-Points from Galactic RR Lyrae Star Parallaxes
• LUNA: a Laboratory for Underground Nuclear Astrophysics
• Age and helium content of the open cluster NGC 6791 from multiple eclipsing binary members. I. Measurements, methods, and first results
• M67-1194, an unusually Sun-like solar twin in M67
• On using the CMD morphology of M67 to test solar abundances
• LUNA: Status and Prospects
• Not All Stars Are the Sun: Empirical Calibration of the Mixing Length for Metal-Poor Stars Using One-dimensional Stellar Evolution Models
• Classically and Asteroseismically constrained 1D Stellar Evolution Models of $\alpha$ Centauri A and B using Empirical Mixing Length Calibrations
• The Future of Solar Neutrinos
• The Impact of Recent Advances in Laboratory Astrophysics on our Understanding of the Cosmos
• The 14N(p,gamma)15O reaction studied with a composite germanium detector
• How accurate are stellar ages based on stellar models ? I. The impact of stellar models uncertainties
• Constraints on the Distance Moduli, Helium and Metal Abundances, and Ages of Globular Clusters from their RR Lyrae and Non-Variable Horizontal-Branch Stars. I. M3, M15, and M92
• Direct measurement of the 15N(p,gamma)16O total cross section at novae energies
• An Examination of Recent Transformations to the BV(RI)_C Photometric System from the Perspective of Stellar Models for Old Stars
• An actively vetoed Clover gamma-detector for nuclear astrophysics at LUNA
• A Long-Period Totally Eclipsing Binary Star at the Turnoff of the Open Cluster NGC 6819 Discovered with Kepler
• Resonance strengths in the 14N(p, γ)15O and 15N(p, αγ)12C reactions
• Underground nuclear astrophysics: why and how
• Astrophysical S-factor of the ${}^{14}\text{N(p,}\gamma {\text{)}}^{15}\text{O}$ reaction at 0.4 -- 1.3\,MeV
• Setup commissioning for an improved measurement of the D(p,gamma)3He cross section at Big Bang Nucleosynthesis energies
• Investigating the Consistency of Stellar Evolution Models with Globular Cluster Observations via the Red Giant Branch Bump
• Exploring Stars in Underground Laboratories: Challenges and Solutions
• Solar fusion III: New data and theory for hydrogen-burning stars
• The robustness of asteroseismic estimates of global stellar parameters to surface term corrections
• Effect of beam energy straggling on resonant yield in thin gas targets: The cases ${}^{22}$Ne(p,γ)${}^{23}$Na and ${}^{14}$N(p,γ)${}^{15}$O
• From Theory to Observations and viceversa: theoretical uncertainties and observational constraints
• Standard solar models: a perspective from updated solar neutrino fluxes and the gravity-mode period spacing
• Lifetime measurements of excited states in ${}^{15}$O
• The Felsenkeller shallow-underground laboratory for nuclear astrophysics
• Reaction Rate Of p14N --> 15Ogamma Capture To All Bound States In Potential Cluster Model
• Generic energy transport solutions to the solar abundance problem -- a hint of new physics
• Radiative Capture of proton 14N(p,γ) 15O at Low Energy
• Stellar evolution and modelling stars
• Chameleon fields and solar physics
• Investigating the impact of Solar Fusion III reaction rates on helioseismic constraints and solar neutrino fluxes