Advertisement

Measurement of the 235U(n, f) cross section relative to the 6Li(n, t) and 10B(n,\( \alpha\)) standards from thermal to 170 keV neutron energy range at n_TOF

  • S. Amaducci
  • L. Cosentino
  • M. Barbagallo
  • N. Colonna
  • A. Mengoni
  • C. Massimi
  • S. Lo Meo
  • P. FinocchiaroEmail author
  • O. Aberle
  • J. Andrzejewski
  • L. Audouin
  • M. Bacak
  • J. Balibrea
  • F. Bečvář
  • E. Berthoumieux
  • J. Billowes
  • D. Bosnar
  • A. Brown
  • M. Caamaño
  • F. Calviño
  • M. Calviani
  • D. Cano-Ott
  • R. Cardella
  • A. Casanovas
  • F. Cerutti
  • Y. H. Chen
  • E. Chiaveri
  • G. Cortés
  • M. A. Cortés-Giraldo
  • L. A. Damone
  • M. Diakaki
  • C. Domingo-Pardo
  • R. Dressler
  • E. Dupont
  • I. Durán
  • B. Fernández-Domínguez
  • A. Ferrari
  • P. Ferreira
  • V. Furman
  • K. Göbel
  • A. R. García
  • A. Gawlik
  • S. Gilardoni
  • T. Glodariu
  • I. F. Gonçalves
  • E. González-Romero
  • E. Griesmayer
  • C. Guerrero
  • F. Gunsing
  • H. Harada
  • S. Heinitz
  • J. Heyse
  • D. G. Jenkins
  • E. Jericha
  • F. Käppeler
  • Y. Kadi
  • A. Kalamara
  • P. Kavrigin
  • A. Kimura
  • N. Kivel
  • I. Knapova
  • M. Kokkoris
  • M. Krtička
  • D. Kurtulgil
  • E. Leal-Cidoncha
  • C. Lederer
  • H. Leeb
  • J. Lerendegui-Marco
  • S. J. Lonsdale
  • D. Macina
  • A. Manna
  • J. Marganiec
  • T. Martínez
  • A. Masi
  • P. Mastinu
  • M. Mastromarco
  • E. A. Maugeri
  • A. Mazzone
  • E. Mendoza
  • P. M. Milazzo
  • F. Mingrone
  • A. Musumarra
  • A. Negret
  • R. Nolte
  • A. Oprea
  • N. Patronis
  • A. Pavlik
  • J. Perkowski
  • I. Porras
  • J. Praena
  • J. M. Quesada
  • D. Radeck
  • T. Rauscher
  • R. Reifarth
  • C. Rubbia
  • J. A. Ryan
  • M. Sabaté-Gilarte
  • A. Saxena
  • P. Schillebeeckx
  • D. Schumann
  • P. Sedyshev
  • A. G. Smith
  • N. V. Sosnin
  • A. Stamatopoulos
  • G. Tagliente
  • J. L. Tain
  • A. Tarifeño-Saldivia
  • L. Tassan-Got
  • S. Valenta
  • G. Vannini
  • V. Variale
  • P. Vaz
  • A. Ventura
  • V. Vlachoudis
  • R. Vlastou
  • A. Wallner
  • S. Warren
  • C. Weiss
  • P. J. Woods
  • T. Wright
  • P. Žugec
Open Access
Regular Article - Experimental Physics
  • 114 Downloads

Abstract.

The 235U(n, f ) cross section was measured at n_TOF relative to 6Li(n, t) and 10B(n,\( \alpha\)) , with high resolution ( \( L=183.49(2)\) m) and in a wide energy range (25meV-170keV) with 1.5% systematic uncertainty, making use of a stack of six samples and six silicon detectors placed in the neutron beam. This allowed us to make a direct comparison of the yields of the 235U(n, f ) and of the two reference reactions under the same experimental conditions, and taking into account the forward/backward emission asymmetry. A hint of an anomaly in the 10-30keV neutron energy range had been previously observed in other experiments, indicating a cross section systematically lower by several percent relative to major evaluations. The present results indicate that the cross section in the 9-18keV neutron energy range is indeed overestimated by almost 5% in the recently released evaluated data files ENDF/B-VIII.0 and JEFF3.3, as a consequence of a 7% overestimate in a single GMA node in the IAEA reference file. Furthermore, these new high-resolution data confirm the existence of resonance-like structures in the keV neutron energy region. The results here reported may lead to a reduction of the uncertainty in the 1-100keV neutron energy region. Finally, from the present data, a value of \( 249.7\pm 1.4(\mathrm{stat}) \pm 0.94(\mathrm{syst})\) b·eV has been extracted for the cross section integral between 7.8 and 11eV, confirming the value of \( 247.5\pm 3\) b·eV recently established as a standard.

References

  1. 1.
    M. Barbagallo et al., Eur. Phys. J. A 49, 156 (2013)ADSCrossRefGoogle Scholar
  2. 2.
    S. Marrone et al., Nucl. Instrum. Methods A 517, 389 (2004)ADSCrossRefGoogle Scholar
  3. 3.
    S. Andriamonje et al., Nucl. Instrum. Methods A 481, 120 (2002)ADSCrossRefGoogle Scholar
  4. 4.
    D.B. Gayther, Metrologia 27, 221 (1990)ADSCrossRefGoogle Scholar
  5. 5.
    D. Tarrío et al., Nucl. Instrum. Methods A 743, 79 (2014)ADSCrossRefGoogle Scholar
  6. 6.
    A. Ferrari, Technical Report CERN-2005-010, INFN/TC 05/11, SLAC-R-773 (2005)Google Scholar
  7. 7.
    A.D. Carlson et al., Nucl. Data Sheets 110, 3215 (2009)ADSCrossRefGoogle Scholar
  8. 8.
    A.D. Carlson et al., Nucl. Data Sheets 148, 143 (2018)ADSCrossRefGoogle Scholar
  9. 9.
    M.B. Chadwick et al., Nucl. Data Sheets 112, 2887 (2011)ADSCrossRefGoogle Scholar
  10. 10.
    D.A. Brown et al., Nucl. Data Sheets 148, 1 (2018) and references thereinADSCrossRefGoogle Scholar
  11. 11.
  12. 12.
    M. Moore et al., Phys. Rev. C 18, 1328 (1978)ADSCrossRefGoogle Scholar
  13. 13.
    J.R. Lemley, G.A. Keyworth, B.C. Diven, Nucl. Sci. Eng. 43, 281 (1971)CrossRefGoogle Scholar
  14. 14.
    R.B. Perez, G. de Saussure, E.G. Silver, R.W. Ingle, H. Weaver, Nucl. Sci. Eng. 55, 203 (1974)CrossRefGoogle Scholar
  15. 15.
    C. Wagemans, A.J. Deruytter, Ann. Nucl. Energy 3, 437 (1976)CrossRefGoogle Scholar
  16. 16.
    G. Lanzanò, E. Migneco, Nuovo Cimento A 259, 41 (1977)Google Scholar
  17. 17.
    T.A. Mostovaya, Proceedings of the 5th All Union Conference on Neutron Physics, Vol. 3 (1980) pp. 30--32Google Scholar
  18. 18.
    L.W. Weston, J.H. Todd, Nucl. Sci. Eng. 88, 567 (1984)CrossRefGoogle Scholar
  19. 19.
    C. Lederer et al., Phys. Rev. C 83, 034608 (2011)ADSCrossRefGoogle Scholar
  20. 20.
    M. Jandel et al., Phys. Rev. Lett. 109, 202506 (2012)ADSCrossRefGoogle Scholar
  21. 21.
    K. Shibata et al., J. Nucl. Sci. Technol. 48, 1 (2011)CrossRefGoogle Scholar
  22. 22.
    S. Goriely, Eur. Phys. J. A 51, 22 (2015)ADSCrossRefGoogle Scholar
  23. 23.
    C. Guerrero et al., Eur. Phys. J. A 49, 27 (2013)ADSCrossRefGoogle Scholar
  24. 24.
  25. 25.
  26. 26.
    G. Lorusso et al., Nucl. Instrum. Methods A 532, 622 (2004)ADSCrossRefGoogle Scholar
  27. 27.
    L. Cosentino et al., Nucl. Instrum. Methods A 830, 197 (2016)ADSCrossRefGoogle Scholar
  28. 28.
    M. Barbagallo et al., Phys. Rev. Lett. 117, 152701 (2016)ADSCrossRefGoogle Scholar
  29. 29.
    S. Agostinelli et al., Nucl. Instrum. Methods Phys. Res. A 506, 250 (2003)ADSCrossRefGoogle Scholar
  30. 30.
    N. Soppera, M. Bossant, E. Dupont, Nucl. Data Sheets 120, 294 (2014)ADSCrossRefGoogle Scholar
  31. 31.
  32. 32.
    V. Pronyaev, private communication (2019)Google Scholar
  33. 33.
    R. Capote et al., Nucl. Data Sheets 148, 254 (2018)ADSCrossRefGoogle Scholar
  34. 34.
    M.V. Berry, P. Shukla, J. Phys. A: Math. Theor. 42, 485102 (2009)CrossRefGoogle Scholar

Copyright information

© The Author(s) 2019

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Authors and Affiliations

  • S. Amaducci
    • 1
    • 35
  • L. Cosentino
    • 1
  • M. Barbagallo
    • 2
  • N. Colonna
    • 2
  • A. Mengoni
    • 3
    • 4
  • C. Massimi
    • 4
    • 5
  • S. Lo Meo
    • 3
    • 4
  • P. Finocchiaro
    • 1
    Email author
  • O. Aberle
    • 6
  • J. Andrzejewski
    • 7
  • L. Audouin
    • 8
  • M. Bacak
    • 9
    • 6
    • 10
  • J. Balibrea
    • 11
  • F. Bečvář
    • 12
  • E. Berthoumieux
    • 10
  • J. Billowes
    • 13
  • D. Bosnar
    • 14
  • A. Brown
    • 15
  • M. Caamaño
    • 16
  • F. Calviño
    • 17
  • M. Calviani
    • 6
  • D. Cano-Ott
    • 11
  • R. Cardella
    • 6
  • A. Casanovas
    • 17
  • F. Cerutti
    • 6
  • Y. H. Chen
    • 8
  • E. Chiaveri
    • 6
    • 13
    • 18
  • G. Cortés
    • 17
  • M. A. Cortés-Giraldo
    • 18
  • L. A. Damone
    • 2
    • 19
  • M. Diakaki
    • 10
  • C. Domingo-Pardo
    • 20
  • R. Dressler
    • 21
  • E. Dupont
    • 10
  • I. Durán
    • 16
  • B. Fernández-Domínguez
    • 16
  • A. Ferrari
    • 6
  • P. Ferreira
    • 22
  • V. Furman
    • 23
  • K. Göbel
    • 24
  • A. R. García
    • 11
  • A. Gawlik
    • 7
  • S. Gilardoni
    • 6
  • T. Glodariu
    • 25
  • I. F. Gonçalves
    • 22
  • E. González-Romero
    • 11
  • E. Griesmayer
    • 9
  • C. Guerrero
    • 18
  • F. Gunsing
    • 10
    • 6
  • H. Harada
    • 26
  • S. Heinitz
    • 21
  • J. Heyse
    • 27
  • D. G. Jenkins
    • 15
  • E. Jericha
    • 9
  • F. Käppeler
    • 28
  • Y. Kadi
    • 6
  • A. Kalamara
    • 29
  • P. Kavrigin
    • 9
  • A. Kimura
    • 26
  • N. Kivel
    • 21
  • I. Knapova
    • 12
  • M. Kokkoris
    • 29
  • M. Krtička
    • 12
  • D. Kurtulgil
    • 24
  • E. Leal-Cidoncha
    • 16
  • C. Lederer
    • 30
  • H. Leeb
    • 9
  • J. Lerendegui-Marco
    • 18
  • S. J. Lonsdale
    • 30
  • D. Macina
    • 6
  • A. Manna
    • 4
    • 5
  • J. Marganiec
    • 7
    • 31
  • T. Martínez
    • 11
  • A. Masi
    • 6
  • P. Mastinu
    • 32
  • M. Mastromarco
    • 2
  • E. A. Maugeri
    • 21
  • A. Mazzone
    • 2
    • 33
  • E. Mendoza
    • 11
  • P. M. Milazzo
    • 34
  • F. Mingrone
    • 6
  • A. Musumarra
    • 1
    • 35
  • A. Negret
    • 25
  • R. Nolte
    • 31
  • A. Oprea
    • 25
  • N. Patronis
    • 36
  • A. Pavlik
    • 37
  • J. Perkowski
    • 7
  • I. Porras
    • 38
  • J. Praena
    • 38
  • J. M. Quesada
    • 18
  • D. Radeck
    • 31
  • T. Rauscher
    • 39
    • 40
  • R. Reifarth
    • 24
  • C. Rubbia
    • 6
  • J. A. Ryan
    • 13
  • M. Sabaté-Gilarte
    • 6
    • 18
  • A. Saxena
    • 41
  • P. Schillebeeckx
    • 27
  • D. Schumann
    • 21
  • P. Sedyshev
    • 23
  • A. G. Smith
    • 13
  • N. V. Sosnin
    • 13
  • A. Stamatopoulos
    • 29
  • G. Tagliente
    • 2
  • J. L. Tain
    • 20
  • A. Tarifeño-Saldivia
    • 17
  • L. Tassan-Got
    • 8
  • S. Valenta
    • 12
  • G. Vannini
    • 4
    • 5
  • V. Variale
    • 2
  • P. Vaz
    • 22
  • A. Ventura
    • 4
  • V. Vlachoudis
    • 6
  • R. Vlastou
    • 29
  • A. Wallner
    • 42
  • S. Warren
    • 13
  • C. Weiss
    • 9
  • P. J. Woods
    • 30
  • T. Wright
    • 13
  • P. Žugec
    • 14
    • 6
  1. 1.INFN Laboratori Nazionali del SudCataniaItaly
  2. 2.Istituto Nazionale di Fisica Nucleare, Sezione di BariBariItaly
  3. 3.Agenzia nazionale per le nuove tecnologie (ENEA)BolognaItaly
  4. 4.Istituto Nazionale di Fisica Nucleare, Sezione di BolognaBolognaItaly
  5. 5.Dipartimento di Fisica e AstronomiaUniversità di BolognaBolognaItaly
  6. 6.European Organization for Nuclear Research (CERN)GenèveSwitzerland
  7. 7.University of LodzLodzPoland
  8. 8.Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-SaclayOrsay CedexFrance
  9. 9.Technische Universität WienWienAustria
  10. 10.CEA Irfu, Université Paris-SaclayGif-sur-YvetteFrance
  11. 11.Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)MadridSpain
  12. 12.Charles UniversityPragueCzech Republic
  13. 13.University of ManchesterManchesterUK
  14. 14.Department of Physics, Faculty of ScienceUniversity of ZagrebZagrebCroatia
  15. 15.University of YorkYorkUK
  16. 16.University of Santiago de CompostelaSantiago de CompostelaSpain
  17. 17.Universitat Politècnica de CatalunyaBarcelonaSpain
  18. 18.Universidad de SevillaSevillaSpain
  19. 19.Dipartimento di FisicaUniversità degli Studi di BariBariItaly
  20. 20.Instituto de Física CorpuscularCSIC - Universidad de ValenciaValenciaSpain
  21. 21.Paul Scherrer Institut (PSI)VillingenSwitzerland
  22. 22.Instituto Superior TécnicoLisbonPortugal
  23. 23.Joint Institute for Nuclear Research (JINR)DubnaRussia
  24. 24.Goethe University FrankfurtFrankfurtGermany
  25. 25.Horia Hulubei National Institute of Physics and Nuclear EngineeringBucharestRomania
  26. 26.Japan Atomic Energy Agency (JAEA)Tokai-muraJapan
  27. 27.European Commission, Joint Research Centre, GeelGeelBelgium
  28. 28.Karlsruhe Institute of TechnologyKarlsruheGermany
  29. 29.National Technical University of AthensAthensGreece
  30. 30.School of Physics and AstronomyUniversity of EdinburghEdinburghUK
  31. 31.Physikalisch-Technische Bundesanstalt (PTB)BraunschweigGermany
  32. 32.INFN Laboratori Nazionali di LegnaroLegnaro (PD)Italy
  33. 33.Consiglio Nazionale delle RicercheBariItaly
  34. 34.Istituto Nazionale di Fisica Nucleare, Sezione di TriesteTriesteItaly
  35. 35.Dipartimento di Fisica e AstronomiaUniversità di CataniaCataniaItaly
  36. 36.University of IoanninaIoanninaGreece
  37. 37.University of Vienna, Faculty of PhysicsViennaAustria
  38. 38.University of GranadaGranadaSpain
  39. 39.Department of PhysicsUniversity of BaselBaselSwitzerland
  40. 40.Centre for Astrophysics ResearchUniversity of HertfordshireHatfieldUK
  41. 41.Bhabha Atomic Research Centre (BARC)MumbaiIndia
  42. 42.Australian National UniversityCanberraAustralia

Personalised recommendations