Buscar
Mostrando ítems 21-30 de 196
Artículo
Destruction of the cosmic γ-ray emitter 26 Al in massive stars: Study of the key 26 Al ( n , p ) reaction
(American Physical Society, 2021)
The 26 Al (n ,p) 26 Mg reaction is the key reaction impacting on the abundances of the cosmic y-ray emitter 26 Al produced in massive stars and impacts on the potential pollution of the early solar system with 26 Al by ...
Artículo
First results of the140ce(N,ү)141ce cross-section measurement at n_tof
(Multidisciplinary Digital Publishing Institute (MDPI), 2021)
An accurate measurement of the140Ce(n,ү) energy-dependent cross-section was performed at the n_TOF facility at CERN. This cross-section is of great importance because it represents a bottleneck for the s-process nucleosynthesis ...
Artículo
Nucleon scattering on actinides using a dispersive optical model with extended couplings
(American Physical Society, 2016)
The Tamura coupling model [Rev. Mod. Phys. 37, 679 (1965)] has been extended to consider the coupling of additional low-lying rotational bands to the ground-state band. Rotational bands are built on vibrational ...
Ponencia
Application of Photon Strength Functions to (n,g ) measurements with the n_TOF TAC
(Proceedings of Science, 2007-06)
The neutron capture cross section measurements at the CERN n_TOF facility are performed using a new detection system, the segmented Total Absorption Calorimeter (TAC). All measurements are performed in reference to the ...
Artículo
The 139 La(n ,γ) cross section: Key for the onset of the s -process
(The American Physical Society, 2007)
The nuclear resonance parameters and the capture cross section of the neutron magic isotope La139 have been measured relative to Au197 in the energy range of 0.6 eV to 9 keV at the neutron time-of-flight (n_TOF) facility ...
Artículo
New measurement of the 242Pu(n,γ) cross section at n_TOF
(EDP Sciences, 2016)
The use of MOX fuel (mixed-oxide fuel made of UO2 and PuO2) in nuclear reactors allows substituting a large fraction of the enriched Uranium by Plutonium reprocessed from spent fuel. With the use of such new fuel composition ...
Artículo
Description of nucleon scattering on 208Pb by a fully Lane-consistent dispersive spherical optical model potential
(EDP Sciences, 2017)
A fully Lane-consistent dispersive spherical optical potential is proposed to describe nucleon scattering interaction with doubly magic nucleus 208Pb up to 200 MeV. The experimental neutron total cross sections, elastically ...
Ponencia
HiSPANoS facility and the new neutron beam line for TOF measurements at the Spanish National Accelerator Lab (CNA)
(Institute of Physics Publishing, 2020)
HiSPANoS (HiSPAlis Neutron Source) is the first accelerator-based neutron facility in Spain, installed at the Centro Nacional de Aceleradores (CNA), where different experiments have been performed related to nuclear ...
Ponencia
Astrophysics at n-TOF facility
(American Institute of Physics, 2010)
Heavy elements with Z ≥ 30 are made by neutron capture reactions during stellar He burning and presumably in supernovae. This contribution deals mainly with the slow neutron capture (s) process which is responsible for ...
Artículo
Maxwellian Neutron Spectrum generation and Stellar Cross-Section measurements: measurement of the Au-197(n,gamma) MACS
(IOP Publishing, 2018)
Maxwellian-averaged cross-sections (MACS) are needed as an input for the models of stellar s- and r-processes nucleosynthesis. MACS can be obtained from activation measurements, irradiating a sample with the neutron field ...