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High-resolution study of ²³⁷Np fission cross section from 5 eV to 1 MeV

Furman, W. and Cennini, P. and Ketlerov, V. and Goverdovski, A. and Konovalov, V. and Abbondanno, U. and Aerts, G. and Alvarez, H. and Alvarez-Velarde, F. and Andriamonje, S. and Andrzejewski, J. and Assimakopoulos, P. and Audouin, L. and Badurek, G. and Baumann, P. and Becvar, F. and Benlliure, J. and Berthoumieux, E. and Calvino, F. and Cano-Ott, D. and Capote, R. and de Albornoz, A. C. and Chepel, V. and Chiaveri, E. and Colonna, N. and Cortes, G. and Cortina, D. and Couture, A. and Cox, J. and David, S. and Dolfini, R. and Domingo-Pardo, C. and Dorochenko, A. and Dridi, W. and Duran, I. and Embid-Segura, M. and Ferrant, L. and Ferrari, A. and Ferreira-Marques, R. and Fitzpatrick, L. and Frais-Koelbl, H. and Fujii, K. and Guerrero, C. and Goncalves, I. and Gallino, R. and Gonzalez-Romero, E. and Gramegna, F. and Griesmayer, E. and Gunsing, F. and Haas, B. and Haight, R. and Heil, M. and Herrera-Martinez, A. and Igashira, M. and Isaev, S. and Jericha, E. and Kadi, Y. and Kappeler, F. and Karamanis, D. and Karadimos, D. and Kerveno, M. and Koehler, P. and Kolokolov, D. and Kossionides, E. and Krticka, M. and Lamboudis, C. and Leeb, H. and Lindote, A. and Lopes, I. and Lozano, M. and Lukic, S. and Marganiec, J. and Marques, L. and Marrone, S. and Mastinu, P. and Mengoni, A. and Milazzo, P. M. and Moreau, C. and Mosconi, M. and Neves, F. and Oberhummer, H. and O'Brien, S. and Oshima, M. and Pancin, J. and Papachristodoulou, C. and Papadopoulos, C. and Paradela, C. and Patronis, N. and Pavlik, A. and Pavlopoulos, P. and Perrot, L. and Plag, R. and Plompen, A. and Plukis, A. and Poch, A. and Pretel, C. and Quesada, J. and Rauscher, T. and Reifarth, R. and Rosetti, M. and Rubbia, C. and Rudolf, G. and Rullhusen, P. and Salgado, J. and Sarchiapone, L. and Sedysheva, M. and Stephan, C. and Tagliente, G. and Tain, J. L. and Tassan-Got, L. and Tavora, L. and Terlizzi, R. and Vannini, G. and Vaz, P. and Ventura, A. and Villamarin, D. and Vincente, M. C. and Vlachoudis, V. and Vlastou, R. and Voss, F. and Wendler, H. and Wiescher, M. and Wisshak, K.. (2005) High-resolution study of ²³⁷Np fission cross section from 5 eV to 1 MeV. In: International Conference on Nuclear Data for Science and Technology, AIP Conference Proceedings Volume 769. Melville (N.Y.), S. 1039-1042.

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Official URL: http://edoc.unibas.ch/dok/A5253951

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Abstract

A series of measurements of Np-237 fission cross section have been performed at the CERN spallation neutron facility n_TOF which covers a wide energy range from 1 eV up to 250 MeV. A fast ionization chamber (FIC) was used as a fission fragment detector with registration efficiency of not less than 97 correct the fission cross section with use of U-235 standard. Total experimental uncertainties are determined to be at the level of 3 Analysis of the experimental data in the restricted neutron energy from 5 eV up to I MeV showed a systematic deviation from evaluated data (ENDF/B-VI). This discrepancy amounts to up to a factor 3 for resolved resonances in the neutron energy range of 5 eV - 2 KeV, and is in good agreement with some previous experiments. A similar disagreement at the level of 6-7 = 300 keV-1 MeV). This energy range is essential for the transmutation of neptunium in ADS or fast reactors. It is concluded that an updated evaluation of nuclear data for. Np-237 is required.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:Rauscher, Thomas
Item Type:Conference or Workshop Item
Bibsysno:Link to catalogue
Publisher:American institute of physics
Note:Publication type according to Uni Basel Research Database: Conference paper
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Last Modified:04 Sep 2015 14:31
Deposited On:22 Mar 2012 13:55

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