We report on measurements of resonance strengths and energies for the Ep = 151 and 193 keV resonances in the 18O(p,α)15N and 17O(p,α)14N reactions, respectively, obtained during commissioning of a new setup for alpha-particle detection studies at the LUNA underground laboratory. Our values, (Formula Presented.) meV, are in excellent agreement with those reported in the literature. New values of resonance energies are Ep =151.2±0.3keV and Ep =194.8±0.3keV, respectively, this latter with the highest precision to date. Comparative background measurements in silicon detectors overground and underground were also carried out, yielding up to a factor of 15 in background suppression at LUNA at energies around 200keV. This clearly demonstrates the usefulness of underground measurements in charged-particles experiments, especially at low detection energies.
Resonance strengths in the <sup>17,18</sup>O(p, α)<sup>14,15</sup>N reactions and background suppression underground: Commissioning of a new setup for charged-particle detection at LUNA / LUNA Collaboration, Null; Bruno, C. G.; Scott, D. A.; Formicola, A.; Aliotta, M.; Davinson, T.; Anders, M.; Best, Andreas; Bemmerer, D.; Broggini, C.; Caciolli, A.; Cavanna, F.; Corvisiero, P.; Depalo, R.; DI LEVA, Antonino; Elekes, Z.; Fülöp, Z. s.; Gervino, G.; Griffin, C. J.; Guglielmetti, A.; Gustavino, C.; Gyürky, G. y.; Imbriani, Gianluca; Junker, M.; Menegazzo, R.; Napolitani, E.; Prati, P.; Somorjai, E.; Straniero, O.; Strieder, F.; Szücs, T.; Trezzi, D.. - In: THE EUROPEAN PHYSICAL JOURNAL. A, HADRONS AND NUCLEI. - ISSN 1434-6001. - 51:8(2015). [10.1140/epja/i2015-15094-y]
Resonance strengths in the 17,18O(p, α)14,15N reactions and background suppression underground: Commissioning of a new setup for charged-particle detection at LUNA
BEST, ANDREAS;DI LEVA, ANTONINO;IMBRIANI, GIANLUCA;
2015
Abstract
We report on measurements of resonance strengths and energies for the Ep = 151 and 193 keV resonances in the 18O(p,α)15N and 17O(p,α)14N reactions, respectively, obtained during commissioning of a new setup for alpha-particle detection studies at the LUNA underground laboratory. Our values, (Formula Presented.) meV, are in excellent agreement with those reported in the literature. New values of resonance energies are Ep =151.2±0.3keV and Ep =194.8±0.3keV, respectively, this latter with the highest precision to date. Comparative background measurements in silicon detectors overground and underground were also carried out, yielding up to a factor of 15 in background suppression at LUNA at energies around 200keV. This clearly demonstrates the usefulness of underground measurements in charged-particles experiments, especially at low detection energies.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
