The LUNA (Laboratory Underground for Nuclear Astrophysics) facility has been designed to study nuclear reactions of astrophysical interest. It is located deep underground in the Gran Sasso National Laboratory; Italy. Two electrostatic accelerators; with 50 and 400 kV maximum voltage, in combination with solid and gas target setups allowed to measure the total cross-sections of the radiative-capture reactions H-2(p, gamma)He-3 and N-14(p, gamma)O-15 within their relevant Gamow peaks. We report on the gamma background in the Gran Sasso laboratory measured by germanium and bismuth germanate detectors, with and without an incident proton beam. A method to localize the sources of beam-induced background using the Doppler shift of emitted gamma rays is presented. The feasibility of radiative-capture studies at energies of astrophysical interest is discussed for several experimental scenarios.
|Titolo:||Feasibility of low energy radiative capture experiments at the LUNA underground accelerator facility|
|Parole Chiave:||SOLAR GAMOW PEAK; GRAN-SASSO; GAMMA)O-15 REACTION; GLOBULAR-CLUSTERS; 1ST MEASUREMENT; CROSS-SECTION; NEUTRON-FLUX; SPECTROMETRY; DETECTORS; N-14(P|
|Settore Scientifico Disciplinare:||Settore FIS/04 - Fisica Nucleare e Subnucleare|
|Data di pubblicazione:||2005|
|Digital Object Identifier (DOI):||10.1140/epja/i2004-10135-4|
|Appare nelle tipologie:||01 - Articolo su periodico|