First results of the140ce(N,ү)141ce cross-section measurement at n_tof

n-TOF Collaboration; Simone Amaducci; Nicola Colonna; Luigi Cosentino; Sergio Cristallo; Paolo Finocchiaro; Milan Krticka; Cristian Massimi; Mario Mastromarco; Annamaria Mazzone; Alberto Mengoni; Stanislav Valenta; Oliver Aberle; Victor Alcayne; Józef Andrzejewski; Laurent Audouin; Victor Babiano-Suarez; Michael Bacak; Massimo Barbagallo; Samuel Bennett; Eric Berthoumieux; Jon Billowes; Damir Bosnar; Adam Brown; Maurizio Busso; Manuel Caamaño; Luis Caballero-Ontanaya; Francisco Calviño; Marco Calviani; Daniel Cano-Ott; Adria Casanovas; Francesco Cerutti; Enrico Chiaveri; Guillem Cortés; Miguel Cortés-Giraldo; Lucia Anna Damone; Paul John Davies; Maria Diakaki; Mirco Dietz; Cesar Domingo-Pardo; Rugard Dressler; Quentin Ducasse; Emmeric Dupont; Ignacio Durán; Zinovia Eleme; Beatriz Fernández-Domínguez; Alfredo Ferrari; Valter Furman; Kathrin Göbel; Ruchi Garg; Thomas Rauscher

doi:10.3390/UNIVERSE7060200

First results of the¹⁴⁰ce(N,ү)¹⁴¹ce cross-section measurement at n_tof

n-TOF Collaboration, Simone Amaducci, Nicola Colonna, Luigi Cosentino, Sergio Cristallo, Paolo Finocchiaro, Milan Krticka, Cristian Massimi, Mario Mastromarco, Annamaria Mazzone, Alberto Mengoni, Stanislav Valenta, Oliver Aberle, Victor Alcayne, Józef Andrzejewski, Laurent Audouin, Victor Babiano-Suarez, Michael Bacak, Massimo Barbagallo, Samuel BennettEric Berthoumieux, Jon Billowes, Damir Bosnar, Adam Brown, Maurizio Busso, Manuel Caamaño, Luis Caballero-Ontanaya, Francisco Calviño, Marco Calviani, Daniel Cano-Ott, Adria Casanovas, Francesco Cerutti, Enrico Chiaveri, Guillem Cortés, Miguel Cortés-Giraldo, Lucia Anna Damone, Paul John Davies, Maria Diakaki, Mirco Dietz, Cesar Domingo-Pardo, Rugard Dressler, Quentin Ducasse, Emmeric Dupont, Ignacio Durán, Zinovia Eleme, Beatriz Fernández-Domínguez, Alfredo Ferrari, Valter Furman, Kathrin Göbel, Ruchi Garg, Thomas Rauscher

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Abstract

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 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.

Original language	English
Article number	200
Number of pages	11
Journal	Universe
Volume	7
Issue number	6
DOIs	https://doi.org/10.3390/UNIVERSE7060200
Publication status	Published - 17 Jun 2021

Keywords

Ce
Capture
Cerium
Cross-section
MACS
Neutron
Nucleosynthesis
N_TOF
S-process

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10.3390/UNIVERSE7060200Licence: CC BY

final-versionFinal published version, 722 KBLicence: CC BY

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n-TOF Collaboration, 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., ... Rauscher, T. (2021). First results of the¹⁴⁰ce(N,ү)¹⁴¹ce cross-section measurement at n_tof. Universe, 7(6), Article 200. https://doi.org/10.3390/UNIVERSE7060200

@article{bd772b07329d40ee8214b70188593549,

title = "First results of the140ce(N,ү)141ce cross-section measurement at n_tof",

abstract = "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 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.",

keywords = "Ce, Capture, Cerium, Cross-section, MACS, Neutron, Nucleosynthesis, N_TOF, S-process",

author = "{n-TOF Collaboration} and Simone Amaducci and Nicola Colonna and Luigi Cosentino and Sergio Cristallo and Paolo Finocchiaro and Milan Krticka and Cristian Massimi and Mario Mastromarco and Annamaria Mazzone and Alberto Mengoni and Stanislav Valenta and Oliver Aberle and Victor Alcayne and J{\'o}zef Andrzejewski and Laurent Audouin and Victor Babiano-Suarez and Michael Bacak and Massimo Barbagallo and Samuel Bennett and Eric Berthoumieux and Jon Billowes and Damir Bosnar and Adam Brown and Maurizio Busso and Manuel Caama{\~n}o and Luis Caballero-Ontanaya and Francisco Calvi{\~n}o and Marco Calviani and Daniel Cano-Ott and Adria Casanovas and Francesco Cerutti and Enrico Chiaveri and Guillem Cort{\'e}s and Miguel Cort{\'e}s-Giraldo and Damone, {Lucia Anna} and Davies, {Paul John} and Maria Diakaki and Mirco Dietz and Cesar Domingo-Pardo and Rugard Dressler and Quentin Ducasse and Emmeric Dupont and Ignacio Dur{\'a}n and Zinovia Eleme and Beatriz Fern{\'a}ndez-Dom{\'i}nguez and Alfredo Ferrari and Valter Furman and Kathrin G{\"o}bel and Ruchi Garg and Thomas Rauscher",

note = "{\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/)",

year = "2021",

month = jun,

day = "17",

doi = "10.3390/UNIVERSE7060200",

language = "English",

volume = "7",

journal = "Universe",

publisher = "MDPI Multidisciplinary Digital Publishing Institute",

number = "6",

}

n-TOF Collaboration, 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, LA, Davies, PJ, 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 & Rauscher, T 2021, 'First results of the¹⁴⁰ce(N,ү)¹⁴¹ce cross-section measurement at n_tof', Universe, vol. 7, no. 6, 200. https://doi.org/10.3390/UNIVERSE7060200

TY - JOUR

T1 - First results of the140ce(N,ү)141ce cross-section measurement at n_tof

AU - n-TOF Collaboration

AU - Amaducci, Simone

AU - Colonna, Nicola

AU - Cosentino, Luigi

AU - Cristallo, Sergio

AU - Finocchiaro, Paolo

AU - Krticka, Milan

AU - Massimi, Cristian

AU - Mastromarco, Mario

AU - Mazzone, Annamaria

AU - Mengoni, Alberto

AU - Valenta, Stanislav

AU - Aberle, Oliver

AU - Alcayne, Victor

AU - Andrzejewski, Józef

AU - Audouin, Laurent

AU - Babiano-Suarez, Victor

AU - Bacak, Michael

AU - Barbagallo, Massimo

AU - Bennett, Samuel

AU - Berthoumieux, Eric

AU - Billowes, Jon

AU - Bosnar, Damir

AU - Brown, Adam

AU - Busso, Maurizio

AU - Caamaño, Manuel

AU - Caballero-Ontanaya, Luis

AU - Calviño, Francisco

AU - Calviani, Marco

AU - Cano-Ott, Daniel

AU - Casanovas, Adria

AU - Cerutti, Francesco

AU - Chiaveri, Enrico

AU - Cortés, Guillem

AU - Cortés-Giraldo, Miguel

AU - Damone, Lucia Anna

AU - Davies, Paul John

AU - Diakaki, Maria

AU - Dietz, Mirco

AU - Domingo-Pardo, Cesar

AU - Dressler, Rugard

AU - Ducasse, Quentin

AU - Dupont, Emmeric

AU - Durán, Ignacio

AU - Eleme, Zinovia

AU - Fernández-Domínguez, Beatriz

AU - Ferrari, Alfredo

AU - Furman, Valter

AU - Göbel, Kathrin

AU - Garg, Ruchi

AU - Rauscher, Thomas

N1 - © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/)

PY - 2021/6/17

Y1 - 2021/6/17

N2 - 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 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.

AB - 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 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.

KW - Ce

KW - Capture

KW - Cerium

KW - Cross-section

KW - MACS

KW - Neutron

KW - Nucleosynthesis

KW - N_TOF

KW - S-process

UR - http://www.scopus.com/inward/record.url?scp=85110705139&partnerID=8YFLogxK

U2 - 10.3390/UNIVERSE7060200

DO - 10.3390/UNIVERSE7060200

M3 - Article

AN - SCOPUS:85110705139

VL - 7

JO - Universe

JF - Universe

IS - 6

M1 - 200

ER -

First results of the¹⁴⁰ce(N,ү)¹⁴¹ce cross-section measurement at n_tof

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Keywords

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