The 3He(alpha,gamma)7Be S-factor at solar energies: the prompt gamma experiment at LUNA

Abstract

The 3He(alpha,gamma)7Be process is a key reaction in both Big-Bang nucleosynthesis and p-p chain of Hydrogen Burning in Stars. A new measurement of the 3He(alpha,gamma)7Be cross section has been performed at the INFN Gran Sasso underground laboratory by both the activation and the prompt gamma detection methods. The present work reports full details of the prompt gamma detection experiment, focusing on the determination of the systematic uncertainty. The final data, including activation measurements at LUNA, are compared with the results of the last generation experiments and two different theoretical models are used to obtain the S-factor at solar energies.

arXiv commentAccepted for publication in Nucl. Phys. A

References in corpus (19)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Measurement of Neutrino Oscillation with KamLAND: Evidence of Spectral Distortion
• Solar Fusion Cross Sections
• Electron Energy Spectra, Fluxes, and Day-Night Asymmetries of ${}^8$B Solar Neutrinos from the 391-Day Salt Phase SNO Data Set
• Solar neutrino measurements in Super-Kamiokande-I
• What do we (not) know theoretically about solar neutrino fluxes?
• Compilation and R-matrix analysis of Big Bang nuclear reaction rates
• On tadpoles and vacuum redefinitions in String Theory
• First real time detection of Be7 solar neutrinos by Borexino
• First Measurement of the He3+He3-->He4+2p Cross Section down to the Lower Edge of the Solar Gamow Peak
• Activation measurement of the 3He(alpha,gamma)7Be cross section at low energy
• Astrophysical S-factor of the 3He(alpha,gamma)7Be reaction measured at low energy via prompt and delayed gamma detection
• A New Precision Measurement of the 3He(4He,gamma)7Be Cross section
• First measurement of the 14N(p,gamma)15O cross section down to 70 keV
• 3He(alpha,gamma)7Be cross section at low energies
• The 3He + 4He --> 7Be Astrophysical S-factor
• Study of the He3(He4,gamma)Be7 and H3(He4,gamma)Li7 reactions in an extended two-cluster model

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