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, N., Bruno, C.G., Scott, D.A., Formicola, A., Aliotta, M., Davinson, T., Anders, M., Best, A., Bemmerer, D., Broggini, C., Caciolli, A., Cavanna, F., Corvisiero, P., Depalo, R., DI LEVA, A., Elekes, Z., Fülöp, Z.s., Gervino, G., Griffin, C.J., Guglielmetti, A., et al.. - 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.
