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Neutron-induced fission cross section of $^{237}$Np in the keV to MeV range at the CERN n_TOF facility

M. Diakaki 1 D. Karadimos R. Vlastou M. Kokkoris P. Demetriou E. Skordis A. Tsinganis U. Abbondanno G. Aerts 2 H. Álvarez F. Alvarez-Velarde S. Andriamonje 2 J. Andrzejewski 3 P. Assimakopoulos L. Audouin 4 G. Badurek Paule Baumann 5 F. Bečvář E. Berthoumieux 1 M. Calviani F. Calviño D. Cano-Ott R. Capote A. Carrillo de Albornoz P. Cennini V. Chepel E. Chiaveri N. Colonna G. Cortes 6 A. Couture J. Cox 7 S. David 4 R. Dolfini C. Domingo-Pardo A. Dorochenko W. Dridi 8 I. Duran Ch. Eleftheriadis M. Embid-Segura L. Ferrant 4 Anthony Ferrari 9 Ricardo Marques 10 L. Fitzpatrick H. Frais-Koelbl K. Fuji W. Furman I. Goncalves R. Gallino E. Gonzalez-Romero A. Goverdovski F. Gramegna E. Griesmayer C. Guerrero F. Gunsing 1 B. Haas 11 R. Haight M. Heil A. Herrera-Martinez M. Igashira K. Ioannidis S. Isaev 1 E. Jericha Y. Kadi F. Käppeler D. Karamanis 12 M. Kerveno 5 V. Ketlerov P. Koehler D. Kolokolov 13 V. Konovalov M. Krtička C. Lamboudis H. Leeb 14 A. Lindote I. Lopes 15 M. Lozano 16 S. Lukic 17 J. Marganiec L. Marques 18 S. Marrone 19, 20 C. Massimi P. Mastinu A. Mengoni M. Milazzo 21 C. Moreau M. Mosconi 22 F. Neves H. Oberhummer S. O'Brien M. Oshima J. Pancin 1 C. Papadopoulos 23 C. Paradela N. Patronis A. Pavlik P. Pavlopoulos 24 L. Perrot 4 R. Plag A. Plompen A. Plukis 1 A. Poch C. Pretel J. Quesada 25 T. Rauscher R. Reifarth M. Rosetti C. Rubbia G. Rudolf 26 P. Rullhusen 27 J. Salgado L. Sarchiapone I. Savvidis M. Sedysheva K. Stamoulis C. Stephan 28 G. Tagliente L. Tain L. Tassan-Got 4 L. Tavora R. Terlizzi G. Vannini P. Vaz A. Ventura D. Villamarin M. Vincente V. Vlachoudis F. Voss 29 H. Wendler M. Wiescher K. Wisshak
22 IKP - Institut für kernphysik [Eggenstein-Leopoldshafen]
KIT - Karlsruher Institut für Technologie
Abstract : The neutron-induced fission cross section of 237Np was experimentally determined at the high-resolution and high-intensity facility n TOF, at CERN, in the energy range 100 keV to 9 MeV, using the 235U(n,f ) and 238U(n,f ) cross section standards below and above 2 MeV, respectively. A fast ionization chamber was used in order to detect the fission fragments from the reactions and the targets were characterized as far as their mass and homogeneity are concerned by means of α spectroscopy and Rutherford backscattering spectroscopy respectively. Theoretical calculations within the Hauser-Feshbach formalism have been performed, employing the EMPIRE code, and the model parameters were tuned in order to successfully reproduce the experimental fission cross-sectional data and simultaneously all the competing reaction channels.
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M. Diakaki, D. Karadimos, R. Vlastou, M. Kokkoris, P. Demetriou, et al.. Neutron-induced fission cross section of $^{237}$Np in the keV to MeV range at the CERN n_TOF facility. Physical Review C, American Physical Society, 2016, 93 (3), pp.034614. ⟨10.1103/PhysRevC.93.034614⟩. ⟨cea-01482459⟩

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