Title: Measurement and analysis of the 243Am neutron capture cross section at the n_TOF facility at CERN
Authors: MENDOZA E.CANO-OTT D.GUERRERO C.BERTHOUMIEUX E.ABBONDANNO U.AERTS G.ALVAREZ-VELARDE F.ANDRIAMONJE S.ANDRZEJEWSKI J.ASSIMAKOPOULOS P.AUDOUIN L.BADUREK G.BAUMANN P.Becvár F.CALVIÑO F.CAPOTE R.CARRILLO DE ALBORNOZ A.Chepel VCHIAVERI E.COLONNA N.CORTES G.COUTURE A.COX J.DOLFINI R.DAVID S.DOMINGO-PARDO C.KONOVALOV V.KARADIMOS D.PAVLOPOULOS P.DRIDI W.DURAN I.ELEFTHERIADIS C.FERRANT L.FERRARI A.FERREIRA-MARQUES R.FITZPATRICK L.FRAIS-KOELBL HFUJII K.FURMAN W.GONCALVES I.CENNINI P.GONZALEZ-ROMERO E.GRIESMAYER E.GOVERDOVSKI A.GUNSING F.HAAS B.HAIGHT R.HEIL M.HERRERA-MARTINEZ A.IGASHIRA M.ISAEV S.JERICHA E.KOEHLER P.KRTICKA M.KERVENO M.KADI Y.KARAMANIS D.LEEB H.LAMPOUDIS C.MARGANIEC J.MASTINU P.MENGONI A.MILAZZO P. M.PARADELA C.PAVLIK A.PLOMPEN ArjanQUESADA J.RAUSCHER T.REIFARTH R.RUBBIA C.TAGLIENTE G.TAIN J. L.TASSAN-GOT L.LINDOTE A.LOPES I.LOZANO M.LUKIC S.MARRONE S.MOREAU C.MOSCONI M.NEVES F.OBERHUMMER H.O'BRIEN S.PAPADOPOULOS C.PATRONIS N.PERROT L.PLAG R.PLUKIS A.POCH A.PRETEL C.RUDOLF G.RULLHUSEN P.SALGADO J.SARCHIAPONE L.SAVVIDIS I.KÄPPELER F.STEPHAN C.TAVORA L.TERLIZZI R.VANNINI G.VENTURA A.VILLAMARIN D.VAZ P.VINCENTE M. C.VOSS F.WIESCHER M.WISSHAK K.GRAMEGNA F.MARQUES L.OSHIMA M.PANCIN J.WENDLER H.KETLEROV V.MASSIMI C.VLASTOU R.VLACHOUDIS V.BALIBREA J.BELLONI F.CALVIANI M.CARRAPICO C.DAHLFORS M.DILLMANN I.KOSSIONIDES E.LO MEO S.LOSSITO R.MARTINEZ T.PAPACHRISTODOULOU C.PIGNI M. T.PRAENA J.SANTOS C.WALTER S.
Citation: PHYSICAL REVIEW C vol. 90 p. 034608 [16 pages]
Publisher: AMER PHYSICAL SOC
Publication Year: 2014
JRC N°: JRC91848
ISSN: 0556-2813
URI: https://journals.aps.org/prc/abstract/10.1103/PhysRevC.90.034608
http://dx.doi.org/10.1103/PhysRevC.90.034608
http://publications.jrc.ec.europa.eu/repository/handle/JRC91848
DOI: 10.1103/PhysRevC.90.034608
Type: Articles in periodicals and books
Abstract: Background: The design of new nuclear reactors and transmutation devices requires to reduce the present neutron cross section uncertainties of minor actinides. Purpose: Improvement of the 243Am(n,γ ) cross section uncertainty. Method: The 243Am(n,γ ) cross section has been measured at the n_TOF facility at CERN with a BaF2 total absorption calorimeter, in the energy range between 0.7 eV and 2.5 keV. Results: The 243Am(n,γ ) cross section has been successfully measured in the mentioned energy range. The resolved resonance region has been extended from 250 eV up to 400 eV. In the unresolved resonance region our results are compatible with one of the two incompatible capture data sets available below 2.5 keV. The data available in EXFOR and in the literature have been used to perform a simple analysis above 2.5 keV. Conclusions: The results of this measurement contribute to reduce the 243Am(n,γ ) cross section uncertainty and suggest that this cross section is underestimated up to 25% in the neutron energy range between 50 eV and a few keV in the present evaluated data libraries.
JRC Directorate:Health, Consumers and Reference Materials

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