The process is a key reaction in both Big-Bang nucleosynthesis and p–p chain of Hydrogen Burning in Stars. A new measurement of the cross section has been performed at the INFN Gran Sasso underground laboratory by both the activation and the prompt γ detection methods. The present work reports full details of the prompt γ 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.
|Titolo:||The 3He(α, γ )7Be S-factor at solar energies : the prompt γ experiment at LUNA|
|Parole Chiave:||σ; 3He (α, γ) 7Be; astrophysical S-factor; branching ratio; Comparison with other data; deduced; E = 220, 250, 400 keV; Eγ; HPGe detector in the Gran Sasso undreground laboratory; Iγ; measured; Nuclear reactions; Prompt γ texhnique|
|Settore Scientifico Disciplinare:||Settore FIS/04 - Fisica Nucleare e Subnucleare|
|Data di pubblicazione:||2008|
|Digital Object Identifier (DOI):||10.1016/j.nuclphysa.2008.09.014|
|Appare nelle tipologie:||01 - Articolo su periodico|