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Crucial inputs to nucleosynthesis calculations
(2008-01)
The first part of the paper discusses nuclear properties relevant to predict compound reactions. The second part addresses direct reactions with special emphasis on direct neutron capture.
Measurement of the (197)Au(n,gamma) cross section at n_TOF : towards a new standard
(EDP Sciences, 2008)
Two different detectors and techniques are employed at n_TOF facility, at CERN, to improve the accuracy of the neutron capture cross section of (197)Au(n,gamma): a total absorption calorimeter and a Set Of C(6)D(6). The ...
Measurement of neutron induced fission of (235)U, (233)U and (245)Cm with the FIC detector at the CERN n_TOF facility
(EDP Sciences, 2008)
A series of measurements of neutron induced fission cross section of various TRU isotopes have been performed at the CERN n_TOF spallation neutron facility, in the energy range from thermal to nearly 250 MeV. The experimental ...
Nuclear physics for the Re/Os clock
(2008-01)
Dating the age of the universe by the beta-decay of (187)Re (t(1/2) = 41.2 Gyr) requires the accurate assessment of the s-process reaction flow. The daughter nucleus (187)Os as well as its immediate s-only neighbor (186)Os ...
Investigation of proton-induced reactions on Germanium isotopes
(2008-01)
The cross sections of the (70)Ge(p,gamma)(71)As and (76)Ge(p, n)(76)As reactions have been measured in the energy range relevant for the astrophysical p-process (1.6-4.4 MeV). The proton beam was provided by the Van de ...
The measurement of the (206)Pb(n,gamma) cross section and stellar implications
(2008-01)
The neutron capture cross section of (206)Pb has been measured at the CERN n_TOF spectrometer using a setup of two C(6)D(6) detectors. In the energy interval from 1 eV to 600 keV the cross section is dominated by resonances, ...
Capture cross section measurements of (186,187,188)Os at n_TOF : the resolved resonance region
(EDP Sciences, 2008)
The neutron capture cross sections of (186,187,188)Os have been measured at the CERN neutron time-of-flight facility, n_TOF, in the neutron energy range from 1 eV up to 1 MeV. In this contribution, we report the results ...
Astrophysical S-factors and reaction rates of (p,n)-reactions on (117)Sn, (118)Sn, (122)Sn, and (124)Sn
(EDP Sciences, 2008)
Astrophysical S-factors and reaction rates were derived from available cross sections of (p,n)-reactions on (117)Sn, (118)Sn, (122)Sn, and (124)Sn isotopes at incident proton energies up to 9 MeV. The statistical theory ...
The (234)U neutron capture cross section measurement at the n_TOF facility
(EDP Sciences, 2008)
The neutron capture cross-section of (234)U has been measured for energies from thermal up to the keV region in the neutron time-of-flight facility n_TOF, based on a spallation source located at CERN. A 4 pi BaF(2) array ...