@misc{10481/68365,
year = {2020},
month = {9},
url = {http://hdl.handle.net/10481/68365},
abstract = {The Maxwellian averaged cross section (MACS) for Au-197(n,gamma) is used in neutron capture cross section measurements as a reference for reactions important for astrophysics, reactor and dosimetry applications. The traditionally adopted value for this reference cross section, in the energy range relevant for astrophysical (3 < E (n) < 200 keV), was obtained by Ratynski and Kappeler in 1988. However, the MACS calculated using the 2006 standards evaluation is approximately 6 % above the Ratynski and Kappeler (R&K) evaluation. Because of this discrepancy new experiments and reanalyses were done in an attempt to resolve the problem. In 2011 we started as well a series of integral experiments (activation) for determining the MACS -30 (kT=30 keV) of Au with two different Maxwellian neutron spectra: i) QMNS-25 (as R&K) and ii) MNS-30 (new method). Our results agree with those obtained with the standard evaluation. At present (2018), the updated MACS -30 has been included as standard Here we present the results of our measurements and the reasons for the lower value of the R&K measurement.},
organization = {Spanish projects (MINECO-FEDER,EU) 

FIS2015-69941-C2-1-P
FPA2016-77689-C2-1-R},
organization = {Spanish Association Against Cancer (AECC) 

PS16163811PORR},
organization = {Programa Operativo FEDER Andalucia 2014-2020 

A-FQM-371-UGR18},
publisher = {EDP Sciences},
title = {Two absolute integral measurements of the Au-197(n,γ) stellar cross-section and solution of the historic discrepancies},
doi = {10.1051/epjconf/202023919002},
author = {Praena Rodríguez, Antonio Javier and Jiménez Bonilla, Pablo},
}