Título First results of the140ce(N,?)141ce cross-section measurement at n_tof
Autores Amaducci S. , Colonna N. , Cosentino L. , Cristallo S. , Finocchiaro P. , Krticka M. , Massimi C. , Mastromarco M. , Mazzone A. , Mengoni A. , Valenta S. , Aberle O. , Alcayne V. , Andrzejewski J. , Audouin L. , Babiano-Suarez V. , Bacak M. , Barbagallo M. , Bennett S. , Berthoumieux E. , Billowes J. , Bosnar D. , Brown A. , Busso M. , Caamaño M. , Caballero-Ontanaya L. , Calviño F. , Calviani M. , Cano-Ott D. , Casanovas A. , Cerutti F. , Chiaveri E. , Cortés G. , Cortés-Giraldo M. , Damone L.-A. , Davies P.-J. , Diakaki M. , Dietz M. , Domingo-Pardo C. , Dressler R. , Ducasse Q. , Dupont E. , Durán I. , Eleme Z. , Fernández-Domínguez B. , Ferrari A. , Furman V. , Göbel K. , Garg R. , Gawlik A. , Gilardoni S. , Gonçalves I. , González-Romero E. , Guerrero C. , Gunsing F. , Harada H. , Heinitz S. , Heyse J. , Jenkins D. , Junghans A. , Käppeler F. , Kadi Y. , Kimura A. , Knapova I. , Kokkoris M. , Kopatch Y. , Kurtulgil D. , Ladarescu I. , Lederer-Woods C. , Leeb H. , Lerendegui-Marco J. , Lonsdale S.-J. , Macina D. , Manna A. , Martínez T. , Masi A. , Mastinu P. , Maugeri E.-A. , Mendoza E. , Michalopoulou V. , Milazzo P. , Mingrone F. , MORENO SOTO, JAVIER, Musumarra A. , Negret A. , Ogállar F. , Oprea A. , Patronis N. , Pavlik A. , Perkowski J. , Piersanti L. , Petrone C. , Pirovano E. , Porras I. , Praena J. , Quesada J.-M. , Ramos-Doval D. , Rauscher T. , Reifarth R. , Rochman D. , Rubbia C. , Sabaté-Gilarte M. , Saxena A. , Schillebeeckx P. , Schumann D. , Sekhar A. , Smith G. , Sosnin N. , Sprung P. , Stamatopoulos A. , Tagliente G. , Tain J. , Tarifeño-Saldivia A. , Tassan-Got L. , Thomas B. , Torres-Sánchez P. , Tsinganis A. , Ulrich J. , Urlass S. , Vannini G. , Variale V. , Vaz P. , Ventura A. , Vescovi D. , Vlachoudis V. , Vlastou R. , Wallner A. , Woods P.J. , Wright T. , Žugec P.
Publicación externa No
Medio Universe
Alcance Article
Naturaleza Científica
Cuartil JCR 2
Cuartil SJR 2
Impacto JCR 2.813
Impacto SJR 0.684
Web https://www.scopus.com/inward/record.uri?eid=2-s2.0-85110705139&doi=10.3390%2fUNIVERSE7060200&partnerID=40&md5=eb69e58a979d5e83c6d8312518aa266c
Fecha de publicacion 01/01/2021
Scopus Id 2-s2.0-85110705139
DOI 10.3390/UNIVERSE7060200
Abstract An accurate measurement of the140Ce(n,?) 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 and determines to a large extent the cerium abundance in stars. The measurement was motivated by the significant difference between the cerium abundance measured in globular clusters and the value predicted by theoretical stellar models. This discrepancy can be ascribed to an overestimation of the140Ce capture cross-section due to a lack of accurate nuclear data. For this measurement, we used a sample of cerium oxide enriched in140Ce to 99.4%. The experimental apparatus consisted of four deuterated benzene liquid scintillator detectors, which allowed us to overcome the difficulties present in the previous measurements, thanks to their very low neutron sensitivity. The accurate analysis of the p-wave resonances and the calculation of their average parameters are fundamental to improve the evaluation of the140Ce Maxwellian-averaged cross-section. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Palabras clave 140Ce; Capture; Cerium; Cross-section; MACS; Neutron; Nucleosynthesis; N_TOF; S-process
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