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Now showing items 15024-15043 of 24237
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Neutron capture cross section measurement of 238U at the CERN n_TOF facility in the energy region from 1 eV to 700 keV
(2017-03-10)The aim of this work is to provide a precise and accurate measurement of the 238U(n,g) reaction cross section in the energy region from 1 eV to 700 keV. This reaction is of fundamental importance for the design calculations ... -
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, ... -
Neutron capture cross section measurements at n_TOF of Np-237, Pu-240 and Am-243 for the transmutation of nuclear waste
(American Institute of Physics (AIP), 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 ... -
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 ... -
Neutron capture cross section of (90)Zr : Bottleneck in the s-process reaction flow
(2008-03)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 (90)Zr, which accounts for more than ... -
Neutron capture cross section of Th-232 measured at the n_TOF facility at CERN in the unresolved resonance region up to 1 MeV
(2006-05)We have measured the neutron capture reaction yield of Th-232 at the neutron time-of-flight facility n_TOF at CERN in the energy range from 1 eV to 1 MeV. The average capture cross section has been extracted in the energy ... -
Neutron capture cross section of Ti-44
(1998-10)The cross section for thermal neutron capture by radioactive Ti-44 was measured to be sigma(gamma) = 1.1 +/- 0.2 b. This result was shown to be in agreement with a direct capture calculation. Possible implications of the ... -
Neutron Capture Cross Section of Unstable Ni-63 : Implications for Stellar Nucleosynthesis
(2013-01-08)The Ni-63(n, gamma) cross section has been measured for the first time at the neutron time-of-flight facility n_TOF at CERN from thermal neutron energies up to 200 keV. In total, capture kernels of 12 (new) resonances were ... -
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 ... -
The neutron capture cross sections of (237)Np(n,gamma) and (240)Pu(n,gamma) and its relevance in the transmutation of nuclear waste
(EDP Sciences, 2008)Neutron capture cross sections of actinides are of great relevance for the Transmutation of Nuclear Waste in Accelerator Driven Systems (ADS) and Generation-IV reactors. The neutron capture cross sections of (237)Np and ... -
Neutron Capture Measurements on Minor Actinides at the n_TOF Facility at CERN : Past, Present and Future
(2011-08-11)The successful development of advanced nuclear systems for sustainable energy production and nuclear waste management depends on high quality nuclear data libraries. Recent sensitivity studies and reports [1-3] have ... -
Neutron capture of Si-30
(2002-10-21)At the Karlsruhe and Tubingen 3.75 MV Van de Graaff accelerators the cross section of the reaction Si-30(n,gamma)Si-31(2.62h) was measured by the activation technique via the beta spectrum of the Si-31-decay. Natural silicon ... -
Neutron Capture on the s-Process Branching Point ^{171}Tm via Time-of-Flight and Activation
(2020-10-02)The neutron capture cross sections of several unstable nuclides acting as branching points in the s process are crucial for stellar nucleosynthesis studies. The unstable ^{171}Tm (t_{1/2}=1.92 yr) is part of the branching ... -
Neutron capture on Zr-94 : Resonance parameters and Maxwellian-averaged cross sections
(2011-07-15)The neutron capture cross sections of the Zr isotopes play an important role in nucleosynthesis studies. The s-process reaction flow between the Fe seed and the heavier isotopes passes through the neutron magic nucleus ... -
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 ...