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Neutron capture cross section measurements for nuclear astrophysics at CERN n_TOF
(2005-07-25)
A series of neutron capture cross section measurements of interest to nuclear astrophysics have been recently performed at n-TOF, the neutron spallation source operating at CERN. The low repetition frequency of the proton ...
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. ...
Neutron capture cross sections for the Re/Os clock
(American Institute of Physics, 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 ...
Neutron capture cross section measurement of Sm-151 at the CERN neutron time of flight facility (n_TOF)
(2004-10-15)
The Sm-151(n,gamma)Sm-152 cross section has been measured at the spallation neutron facility n_TOF at CERN in the energy range from 1 eV to 1 MeV. The new facility combines excellent resolution in neutron time-of-flight, ...
Predicted cross-sections for photon-induced particle emission
(2004-09)
Cross-sections for the photon-induced particle-emission reactions (gamma,n), (gamma,p), and (gamma,alpha) are given for all natural isotopes from Ti to Bi. The target nuclei are assumed to be in their ground states, except ...
The r-process in supernovae
(World Scientific Publishing, 2004-09)
This introductory review aims at understanding r-process nucleosynthesis by addressing the issues involved, nuclear properties, necessary environment conditions, properties of different suggested r-process sites, observational ...
Sensitivity of the C and O production on the 3 alpha rate
(2004)
We investigate the dependence of the carbon and oxygen production in stars on the 3alpha rate by varying the energy of the 0(2)(+)-state of (12)C and determine the resulting yields for a selection of low-mass, intermediate-mass ...
Resonance analysis of (147)Sm(n,alpha) cross sections : Comparison to optical model calculations and indications of nonstatistical effects
(2004-01)
We have measured the (147)Sm(n,alpha) cross section from 3 eV to 500 keV and performed an R-matrix analysis in the resolved region (E(n)
Proton induced reaction cross section measurements on Se isotopes for the astrophysical p process
(2003-11)
As a continuation of a systematic study of reactions relevant to the astrophysical p process, the cross sections of the Se-74,Se-76(p,gamma) Br-75,Br-77 and Se-82(p,n) Br-82 reactions have been measured at energies from ...
Neutron capture reaction rates for silicon and their impact on the origin of presolar mainstream SiC grains
(2003-06)
We have made new, improved measurements of the Si28-30 (n, gamma) cross sections and have done a resonance analysis of these data including previous total cross sections. Together with the calculated contributions due to ...