EPJ Web of Conferences (Oct 2010)

Measurements of high-energy neutron-induced fission ofnatPb and 209Bi

  • Couture A.,
  • Cortes G.,
  • Colonna N.,
  • Chiaveri E.,
  • Chepel V.,
  • Cennini P.,
  • Carrapiço C.,
  • Capote R.,
  • Cano-Ott D.,
  • Calviani M.,
  • Calviño F.,
  • Berthoumieux E.,
  • Becvár F.,
  • Baumann P.,
  • Badurek G.,
  • Assimakopoulos P.,
  • Andrzejewski J.,
  • Andriamonje S.,
  • Álvarez-Velarde F.,
  • Álvarez H.,
  • Aerts G.,
  • Abbondanno U.,
  • Trubert D.,
  • Stephan C.,
  • Paradela C.,
  • Le Naour C.,
  • Isaev S.,
  • Ferrant L.,
  • Duran I.,
  • Berthier B.,
  • Audouin L.,
  • Tassan-Got L.,
  • Tarrío D.,
  • Cox J.,
  • Dahlfors M.,
  • David S.,
  • Dillmann I.,
  • Domingo-Pardo C.,
  • Dridi W.,
  • Eleftheriadis C.,
  • Embid-Segura M.,
  • Ferrari A.,
  • Ferreira-Marques R.,
  • Fujii K.,
  • Furman W.,
  • Gonçalves I.,
  • González-Romero E.,
  • Gramegna F.,
  • Guerrero C.,
  • Gunsig F.,
  • Haas B.,
  • Haight R.,
  • Heil M.,
  • Herrera-Martinez A.,
  • Igashira M.,
  • Jericha E.,
  • Kadi Y.,
  • Käppeler F.,
  • Karadimos D.,
  • Karamanis D.,
  • Kerveno M.,
  • Koehler P.,
  • Kossionides E.,
  • Krticka M.,
  • Lampoudis C.,
  • Leeb H.,
  • Lindote A.,
  • Lopes I.,
  • Lozano M.,
  • Lukic S.,
  • Marganiec J.,
  • Marrone S.,
  • Martínez T.,
  • Massimi C.,
  • Mastinu P.,
  • Mengoni A.,
  • Milazzo P.M.,
  • Moreau C.,
  • Mosconi M.,
  • Neves F.,
  • Oberhummer H.,
  • O’Brien S.,
  • Oshima M.,
  • Pancin J.,
  • Papachristodoulou C.,
  • Papadopoulos C.,
  • Patronis N.,
  • Pavlik A.,
  • Pavlopoulos P.,
  • Perrot L.,
  • Pigni M.T.,
  • Plag R.,
  • Plompen A.,
  • Plukis A.,
  • Poch A.,
  • Praena J.,
  • Pretel C.,
  • Quesada J.,
  • Rauscher T.,
  • Reifarth R.,
  • Rubbia C.,
  • Rudolf G.,
  • Rullhusen P.,
  • Salgado J.,
  • Santos C.,
  • Sarchiapone L.,
  • Savvidis I.,
  • Tagliente G.,
  • Tain J.L.,
  • Tavora L.,
  • Terlizzi R.,
  • Vannini G.,
  • Vaz P.,
  • Ventura A.,
  • Villamarin D.,
  • Vicente M.C.,
  • Vlachoudis V.,
  • Vlastou R.,
  • Voss F.,
  • Walter S.,
  • Wiescher M.,
  • Wisshak K.

DOI
https://doi.org/10.1051/epjconf/20100807009
Journal volume & issue
Vol. 8
p. 07009

Abstract

Read online

The CERN Neutron Time-Of-Flight (n_TOF) facility is well suited to measure low cross sections as those of neutron-induced fission in subactinides. The cross section ratios of natPb and 209Bi relative to 235U and 238U were measured using PPAC detectors and a fragment coincidence method that allows us to identify the fission events. The present experiment provides first results for neutron-induced fission up to 1 GeV. Good agreement is found with previous experimental data below 200 MeV. The comparison with proton-induced fission indicates that the limiting regime where neutron-induced and proton-induced fission reach equal cross sections is close to 1 GeV.