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Elastic alpha scattering on Sn-112 and Sn-124 at astrophysically relevant energies
(2005-06)
The cross sections for the elastic scattering reactions Sn-112,Sn-124(alpha,alpha)Sn-112,Sn-124 at energies above and below the Coulomb barrier are presented and compared to predictions for global alpha-nucleus potentials. ...
Nuclear physics : A key ingredient in astrophysical modeling
(2005-04-18)
Nuclear physics is a basic ingredient in a large number of energetic astrophysical environments which are characterized by sufficient temperatures and densities to permit scattering events among particles, leading to nuclear ...
The data acquisition system of the neutron time-of-flight facility n_TOF at CERN
(2005-02-11)
The n_TOF facility at CERN has been designed for the measurement of neutron capture, fission and (n, xn) cross-sections with high accuracy. This requires a flexible and-due to the high instantaneous neutron flux-almost ...
Calculations of fission rates for r-process nucleosynthesis
(2005-01-24)
Fission plays an important role in the r-process which is responsible; not only for the yields of transuranium isotopes, but may have a strong influence on the formation of the majority of heavy nuclei due to fission ...
High-resolution study of Np-237 fission cross section from 5 eV to 1 MeV
(American Institute of Physics (AIP), 2005)
A series of measurements of Np-237 fission cross section have been performed at the CERN spallation neutron facility n_TOF which covers a wide energy range from 1 eV up to 250 MeV. A fast ionization chamber (FIC) was used ...
New measurement of the capture cross section of bismuth and lead isotopes
(American Institute of Physics (AIP), 2005)
All the stable lead isotopes and Bi-209 have been recently measured at n-TOF [I] (CERN) in the range from 1 eV up to I MeV, using an optimized experimental setup. A set of two homemade CA detectors with carbon-fibre canning ...
The n(-)TOF facility at CERN: Performances and first physics results
(American Institute of Physics (AIP), 2005)
The neutron Time of Flight (n_TOF) facility at CERN is a source of a wide-range (1 eV <E-n <250 MeV) flux of neutrons, generated by spallation of 20-GeV/c protons onto a solid lead target. The goal of the n_TOF is to provide ...
Neutron capture cross sections for the Re/Os clock
(American Institute of Physics (AIP), 2005)
The radioactive decay of (187)Re -> (187)Os (t(1/2) = 43 Gyr) is suited for dating the onset of heavy-element nucleosynthesis. The radiogenic contribution to the (187)Os abundance is the difference between the natural ...
Measurement of capture cross sections of 90,91,92,94,96Zr isotopes at n_TOF
(American Institute of Physics (AIP), 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 ...