Measurement and analysis of the $$^{246}$$Cm and $$^{248}$$Cm neutron capture cross-sections at the EAR2 of the n_TOF facility at CERN

Abstract The $$^{246}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>246</mml:mn> </mml:mmultiscripts> </mml:math> Cm(n, $$\gamma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>γ</mml:mi> </mml:math> ) and $$^{248}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>248</mml:mn> </mml:mmultiscripts> </mml:math> Cm(n, $$\gamma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>γ</mml:mi> </mml:math> ) cross-sections have been measured at the Experimental Area 2 (EAR2) of the n_TOF facility at CERN with three C $$_6$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mn>6</mml:mn> <mml:mrow/> </mml:mmultiscripts> </mml:math> D $$_6$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mn>6</mml:mn> <mml:mrow/> </mml:mmultiscripts> </mml:math> detectors. This measurement is part of a collective effort to improve the capture cross-section data for Minor Actinides (MAs), which are required to estimate the production and transmutation rates of these isotopes in light water reactors and innovative reactor systems. In particular, the neutron capture in $$^{246}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>246</mml:mn> </mml:mmultiscripts> </mml:math> Cm and $$^{248}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>248</mml:mn> </mml:mmultiscripts> </mml:math> Cm open the path for the formation of other Cm isotopes and heavier elements such as Bk and Cf and the knowledge of (n, $$\gamma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>γ</mml:mi> </mml:math> ) cross-sections of these Cm isotopes plays an important role in the transport, transmutation and storage of the spent nuclear fuel. The reactions $$^{246}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>246</mml:mn> </mml:mmultiscripts> </mml:math> Cm(n, $$\gamma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>γ</mml:mi> </mml:math> ) and $$^{248}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>248</mml:mn> </mml:mmultiscripts> </mml:math> Cm(n, $$\gamma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>γ</mml:mi> </mml:math> ) have been the two first capture measurements analyzed at n_TOF EAR2. Until this experiment and two recent measurements performed at J-PARC, there was only one set of data of the capture cross-sections of $$^{246}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>246</mml:mn> </mml:mmultiscripts> </mml:math> Cm and $$^{248}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>248</mml:mn> </mml:mmultiscripts> </mml:math> Cm, that was obtained in 1969 in an underground nuclear explosion experiment. In the measurement at n_TOF a total of 13 resonances of $$^{246}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>246</mml:mn> </mml:mmultiscripts> </mml:math> Cm between 4 and 400 eV and 5 of $$^{248}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>248</mml:mn> </mml:mmultiscripts> </mml:math> Cm between 7 and 100 eV have been identified and fitted. The radiative kernels obtained for $$^{246}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>246</mml:mn> </mml:mmultiscripts> </mml:math> Cm are compatible with JENDL-5, but some of them are not with JENDL-4, which has been adopted by JEFF-3.3 and ENDF/B-VIII.0. The radiative kernels obtained for the first three $$^{248}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>248</mml:mn> </mml:mmultiscripts> </mml:math> Cm resonances are compatible with JENDL-5, however, the other two are not compatible with any other evaluation and are 20 and 60% larger than JENDL-5.

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Journal
The European Physical Journal A
Published
2024-12-10
DOI
https://doi.org/10.1140/epja/s10050-024-01453-w
Citations
4
Primary Topic
Nuclear reactor physics and engineering
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article
Field-Weighted Citation Impact
5.20

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article

Measurement and analysis of the $$^{246}$$Cm and $$^{248}$$Cm neutron capture cross-sections at the EAR2 of the n_TOF facility at CERN

C. Guerrero, F. Calviño, Μ. Diakaki, K. Göbel et al.
4 citations
The European Physical Journal A
Nuclear reactor physics and engineering
5.20
article

Measurement and analysis of the $$^{246}$$Cm and $$^{248}$$Cm neutron capture cross-sections at the EAR2 of the n_TOF facility at CERN

C. Guerrero, F. Calviño, Μ. Diakaki, K. Göbel, J. Perkowski, F. Álvarez‐Velarde, J. Ulrich, D. Bosnar, M. Busso, A. Gawlik, F. Cerutti, N. Patronis, G. Bellia, L. Persanti, P. J. Woods, A. Casanovas, S. Cristallo, F. Bečvář, A. G. Smith, R. Dressler, M. Calviani, R. Reifarth, A. Ventura, G. Cortés, I. Porras, J. Lerendegui-Marco, A. Ferrari, B. Fernández–Domínguez, J. Andrzejewski, A. Stamatopoulos, L. Coséntino, I. Knapová, P. Finocchiaro, A. Mazzone, D. Schumann, N. Colonna, A. Tsinganis, M. Dietz, N. V. Sosnin, V. Michalopoulou, M. Sabaté-Gilarte, A. Tarifeño-Saldivia, C. Domingo-Pardo, J. Heyse, Akira Kimura, M. Caamaño, A. Wallner, O. Aberle, J. Praena, E. Berthoumieux, E. Dupont, D. Vescovi, M. Kokkoris, M. Krtička, S. Simone, M. Bacak, A. Musumarra, L. Caballero, R. Vlastou, D. Cano‐Ott, T. Glodariu, Yu. N. Kopatch, V. Alcayne, P. Žugec, A. Masi, Y. H. Chen, J. L. Taı́n, Hideo Harada, I. F. Gonçalves, C. Massimi, T. Rauscher, D. Ramos, I. Ladarescu, A. Pavlik, I. Durán, A. Pérez de Rada, S. J. Lonsdale, P. Vaz, Tatsuya Katabuchi, S. Urlaß, S. Lo Meo, A. Manna, D. G. Jenkins, P. M. Milazzo, L. Audouin, V. Bécares, E. González-Romero, E. A. Maugeri, F. Gunsing, A. Brown, D. Rochman, S. Valenta, A. Mengoni, M. Mastromarco, E. Mendoza, E. Chiaveri, V. Furman, D. Kurtulgil, F. Ogállar, A. Oprea, R. Nolte, A. Negreţ, L. Tassan-Gôt, M. A. Cortés‐Giraldo, T. Martínez, M. Barbagallo, Y. Kadi, D. Macina, D. Radeck, T. Wright, C. Lederer-Woods, F. Matteucci, N. Kivel, G. Vannini, A. Saxena, F. Mingrone, J. Billowes, S. Heinitz, L. A. Damone, F. Käppeler, J. M. Quesada, Z. Eleme, P. Mastinu, T. Talip, P. Schillebeeckx, V. Vlachoudis, G. Tagliente, V. Variale, S. Gilardoni
article en
4 citations

Abstract

Abstract The $$^{246}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>246</mml:mn> </mml:mmultiscripts> </mml:math> Cm(n, $$\gamma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>γ</mml:mi> </mml:math> ) and $$^{248}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>248</mml:mn> </mml:mmultiscripts> </mml:math> Cm(n, $$\gamma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>γ</mml:mi> </mml:math> ) cross-sections have been measured at the Experimental Area 2 (EAR2) of the n_TOF facility at CERN with three C $$_6$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mn>6</mml:mn> <mml:mrow/> </mml:mmultiscripts> </mml:math> D $$_6$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mn>6</mml:mn> <mml:mrow/> </mml:mmultiscripts> </mml:math> detectors. This measurement is part of a collective effort to improve the capture cross-section data for Minor Actinides (MAs), which are required to estimate the production and transmutation rates of these isotopes in light water reactors and innovative reactor systems. In particular, the neutron capture in $$^{246}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>246</mml:mn> </mml:mmultiscripts> </mml:math> Cm and $$^{248}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>248</mml:mn> </mml:mmultiscripts> </mml:math> Cm open the path for the formation of other Cm isotopes and heavier elements such as Bk and Cf and the knowledge of (n, $$\gamma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>γ</mml:mi> </mml:math> ) cross-sections of these Cm isotopes plays an important role in the transport, transmutation and storage of the spent nuclear fuel. The reactions $$^{246}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>246</mml:mn> </mml:mmultiscripts> </mml:math> Cm(n, $$\gamma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>γ</mml:mi> </mml:math> ) and $$^{248}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>248</mml:mn> </mml:mmultiscripts> </mml:math> Cm(n, $$\gamma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>γ</mml:mi> </mml:math> ) have been the two first capture measurements analyzed at n_TOF EAR2. Until this experiment and two recent measurements performed at J-PARC, there was only one set of data of the capture cross-sections of $$^{246}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>246</mml:mn> </mml:mmultiscripts> </mml:math> Cm and $$^{248}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>248</mml:mn> </mml:mmultiscripts> </mml:math> Cm, that was obtained in 1969 in an underground nuclear explosion experiment. In the measurement at n_TOF a total of 13 resonances of $$^{246}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>246</mml:mn> </mml:mmultiscripts> </mml:math> Cm between 4 and 400 eV and 5 of $$^{248}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>248</mml:mn> </mml:mmultiscripts> </mml:math> Cm between 7 and 100 eV have been identified and fitted. The radiative kernels obtained for $$^{246}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>246</mml:mn> </mml:mmultiscripts> </mml:math> Cm are compatible with JENDL-5, but some of them are not with JENDL-4, which has been adopted by JEFF-3.3 and ENDF/B-VIII.0. The radiative kernels obtained for the first three $$^{248}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mrow/> <mml:mn>248</mml:mn> </mml:mmultiscripts> </mml:math> Cm resonances are compatible with JENDL-5, however, the other two are not compatible with any other evaluation and are 20 and 60% larger than JENDL-5.

The European Physical Journal AVol. 60(12)
Université Paris-Sud (FR), Karlsruhe Institute of Technology (DE), National Agency for New Technologies, Energy and Sustainable Economic Development (IT), Goethe University Frankfurt (DE), Tokyo Institute of Technology (JP), Japan Atomic Energy Agency (JP), Australian National University (AU), Physikalisch-Technische Bundesanstalt (DE), Centre National de la Recherche Scientifique (FR), University of Vienna (AT), Bhabha Atomic Research Centre (IN), University of Hertfordshire (GB), TU Wien (AT), Istituto Nazionale di Fisica Nucleare (IT), Universitat de València (ES), Universidad de Granada (ES), National Technical University of Athens (GR), University of Zagreb (HR), University of Basel (CH), University of Ioannina (GR), Universidade de Santiago de Compostela (ES), Charles University (CZ), Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR), University of Perugia (IT), Université Paris-Saclay (FR), European Commission (BE), Helmholtz-Zentrum Dresden-Rossendorf (DE), Paul Scherrer Institute (CH), University of Manchester (GB), Joint Institute for Nuclear Research (RU), University of Łódź (PL), University of Catania (IT), Osservatorio astronomico di Bologna (IT), Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering (RO), Institut de Physique (FR), Instituto de Física Corpuscular (ES), Istituto Nazionale di Fisica Nucleare, Sezione di Bari (IT), Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud (IT), Collurania Teramo Observatory (IT), Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro (IT), CEA Paris-Saclay (FR), Institut National de Physique Nucléaire et de Physique des Particules (FR), Consorzio Roma Ricerche (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Bologna (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Trieste (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (IT), Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (ES), Instituto Superior Técnico (PT), University of York (GB), University of Bari Aldo Moro (IT), European Organization for Nuclear Research (CH), Universidad de Sevilla (ES), National Institute for Astrophysics (IT), University of Bologna (IT), Universitat Politècnica de Catalunya (ES), University of Edinburgh (GB)
European Commission, Hrvatska Zaklada za Znanost, Horizon 2020 Framework Programme, Engineering and Physical Sciences Research Council, Science and Technology Facilities Council, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Agencia Estatal de Investigación
Openalex Percentile: Top 5%
Nuclear reactor physics and engineering
5.20
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