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Mostrando ítems 1-10 de 26
Artículo
Resonance capture cross section of 207 Pb
(American Physical Society, 2006-11-16)
The radiative neutron capture cross section of 207 Pb has been measured at the CERN neutron time of flight installation n TOF using the pulse height weighting technique in the resolved energy region. The measurement has ...
Ponencia
Neutron capture cross sections for the Re/Os clock
(AIP Publishing, 2005)
The radioactive decay of 187Re → 187Os (t 1/2 = 43 Gyr) is suited for dating the onset of heavy-element nucleosynthesis. The radiogenic contribution to the 187Os abundance is the difference between the natural abundance ...
Artículo
The 139 La(n ,γ) cross section: Key for the onset of the s -process
(The American Physical Society, 2007)
The nuclear resonance parameters and the capture cross section of the neutron magic isotope La139 have been measured relative to Au197 in the energy range of 0.6 eV to 9 keV at the neutron time-of-flight (n_TOF) facility ...
Ponencia
Neutron capture cross section measurements at n_TOF of Np-237, Pu-240 and Am-243 for the transmutation of nuclear waste
(AIP Publishing, 2006)
Accurate and reliable neutron capture cross section data for actinides are necessary for the proper design, safety regulation and precise performance assessment of transmutation devices such as Fast Critical Reactors or ...
Artículo
Dispersive spherical optical model of neutron scattering from 27 Al up to 250 MeV
(American Physical Society, 2002-03-01)
A spherical optical model potential (OMP) containing a dispersive term is used to fit the available experimental database of s(u) and sT for n127Al covering the energy range 0.1–250 MeV using relativistickinematics ...
Artículo
New measurement of neutron capture resonances in 209 Bi
(American Physical Society, 2006-08-29)
The neutron capture cross section of 209 Bi has been measured at the CERN n TOF facility by employing the pulse-height-weighting technique. Improvements over previous measurements are mainly because of an optimized ...
Ponencia
Measurement of La-139(n,gamma) cross section at n_TOF
(American Institute of Physics, 2006)
The capture cross section of the 139La has been measured relative to 197Au standard at n_TOF. We provide here a short description of the experimental apparatus and of the data analysis procedures. The extracted resonance ...
Artículo
Measurement of the radiative neutron capture cross section of 206 Pb and its astrophysical implications
(The American Physical Society, 2007)
The (n,γ) cross section of 206Pb has been measured at the CERN n_TOF facility with high resolution in the energy range from 1 eV to 620 keV by using two optimized 6C6D detectors. In the investigated energy interval about ...
Artículo
Neutron capture cross section of 90Zr: Bottleneck in the s-process reaction flow
(The American Physical Society, 2008)
The neutron capture cross sections of the Zr isotopes have important implications in nuclear astrophysics and for reactor design. The small cross section of the neutron magic nucleus 90Zr, which accounts for more than 50% ...
Ponencia
Measurement of capture cross sections of 90,91,92,94,96Zr isotopes at n_TOF
(AIP Publishing, 2005)
The neutron capture cross sections for Zr isotopes have important implications in nuclear technologies as well in the field of nuclear astrophysics. The innovative features of the n_TOF CERN facility allowed for an accurate ...