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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. ...
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, ...
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 ...
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 ...
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)
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 ...
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 ...
Determination of (n,gamma) reaction rates at s-process branching points via their inverse reactions
(2003-05-19)
We present our method to determine the (n,gamma) reaction rates of s-process branching point nuclei using data of the inverse (gamma,n) reaction. As an example, we selected Zr-95. The analysis of the data of the reaction ...