@misc{10481/82987,
year = {2023},
month = {3},
url = {https://hdl.handle.net/10481/82987},
abstract = {Neutron capture cross-section measurements are fundamental in the study of astrophysical phenomena, such as the slow neutron capture (s-) process of nucleosynthesis operating in red-giant and massive stars. However, neutron capture measurements via the time-of-flight (TOF) technique on key s-process nuclei are often challenging. Difficulties arise from the limited mass (∼mg) available and the high sample-related background in the case of the unstable s-process branching points. Measurements on neutron magic nuclei, that act as s-process bottlenecks, are affected by low (n,γ) cross sections and a dominant neutron scattering background. Overcoming these experimental challenges requires the combination of facilities with high instantaneous flux, such as n_TOFEAR2, with detection systems with an enhanced detection sensitivity and high counting rate capabilities. This contribution reviews some of the latest detector developments in detection systems for (n,γ) measurements at n_TOF, such as i-TED, an innovative detection system which exploits the Compton imaging technique to reduce the dominant neutron scattering background and s-TED, a highly segmented total energy detector intended for high flux facilities. The discussion will be illustrated with results of the first measurement of key the s-process branching-point reaction 79Se(n,γ).},
organization = {European Research Council
(ERC)},
organization = {European Union’s Horizon 2020 research and innovation programme (ERC Consolidator
Grant project HYMNS, with grant agreement No. 681740)},
organization = {FJC2020-044688-I},
organization = {ICJ220-045122-I funded by
MCIN/AEI/ 10.13039/501100011033},
organization = {European Union NextGenerationEU/PRTR},
organization = {Spanish Ministerio de Ciencia e Innovación under grants PID2019-
104714GB-C21},
organization = {FPA2017-83946-C2-1-P, FIS2015-71688-ERC},
organization = {PIE-201750I26},
organization = {CERN policy in matters of scientific
publications, the n_TOF Collaboration},
publisher = {Edp Sciences},
title = {New detection systems for an enhanced sensitivity in key stellar (n,γ) measurements},
doi = {10.1051/epjconf/202327913001},
author = {Lerendegui-Marco, J. and García Infantes, Francisco and Porras Sánchez, José Ignacio and Praena Rodríguez, Antonio Javier and Torres Sánchez, Pablo},
}