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Träfflista för sökning "WFRF:(Corvisiero P.) srt2:(2008)"

Sökning: WFRF:(Corvisiero P.) > (2008)

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1.
  • Marta, M., et al. (författare)
  • Precision study of ground state capture in the 14N(p,γ)15O reaction
  • 2008
  • Ingår i: Physical Review C. Nuclear Physics. - 0556-2813 .- 1089-490X. ; 78:2
  • Tidskriftsartikel (refereegranskat)abstract
    • The rate of the hydrogen-burning carbon-nitrogen-oxygen (CNO) cycle is controlled by the slowest process, 14N(p,γ)15O, which proceeds by capture to the ground and several excited states in O15. Previous extrapolations for the ground state contribution disagreed by a factor 2, corresponding to 15% uncertainty in the total astrophysical S factor. At the Laboratory for Underground Nuclear Astrophysics (LUNA) 400 kV accelerator placed deep underground in the Gran Sasso facility in Italy, a new experiment on ground state capture has been carried out at 317.8, 334.4, and 353.3 keV center-of-mass energy. Systematic corrections have been reduced considerably with respect to previous studies by using a Clover detector and by adopting a relative analysis. The previous discrepancy has been resolved, and ground state capture no longer dominates the uncertainty of the total S factor. © 2008 The American Physical Society.
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2.
  • Trautvetter, H P, et al. (författare)
  • Ground state capture in 14N(p,γ)15O studied above the 259 keV resonance at LUNA
  • 2008
  • Ingår i: Journal of Physics G. - : IOP Publishing. - 0954-3899 .- 1361-6471. ; 35:1
  • Tidskriftsartikel (refereegranskat)abstract
    • We report on a new measurement of 14N(p,γ)15O for the ground state capture transition at Ep = 360, 380 and 400 keV, using the 400 kV LUNA accelerator. The true coincidence summing effect - the major source of error in the ground state capture determination - has been significantly reduced by using a Clover-type gamma detector. © 2008 IOP Publishing Ltd.
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