Abstract
The U238 to U235 fission cross section ratio has been determined at n-TOF up to ≈1 GeV, with two different detection systems, in different geometrical configurations. A total of four datasets has been collected and compared. They are all consistent to each other within the relative systematic uncertainty of 3-4%. The data collected at n-TOF have been suitably combined to yield a unique fission cross section ratio as a function of neutron energy. The result confirms current evaluations up to 200 MeV. Good agreement is also observed with theoretical calculations based on the INCL++/Gemini++ combination up to the highest measured energy. The n-TOF results may help solve a long-standing discrepancy between the two most important experimental datasets available so far above 20 MeV, while extending the neutron energy range for the first time up to ≈1 GeV.
| Original language | English |
|---|---|
| Article number | 024602 |
| Journal | Physical Review C |
| Volume | 91 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 9 Feb 2015 |
Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver
}
In: Physical Review C, Vol. 91, No. 2, 024602, 09.02.2015.
Research output: Contribution to journal › Article › peer-review
TY - JOUR
T1 - High-accuracy determination of the U 238 / U 235 fission cross section ratio up to ≈1 GeV at n-TOF at CERN
AU - Paradela, C.
AU - Calviani, M.
AU - Tarrío, D.
AU - Leal-Cidoncha, E.
AU - Leong, L. S.
AU - Tassan-Got, L.
AU - Le Naour, C.
AU - Duran, I.
AU - Colonna, N.
AU - Audouin, L.
AU - Mastromarco, M.
AU - Lo Meo, S.
AU - Ventura, A.
AU - Aerts, G.
AU - Altstadt, S.
AU - Álvarez, H.
AU - Álvarez-Velarde, F.
AU - Andriamonje, S.
AU - Andrzejewski, J.
AU - Badurek, G.
AU - Barbagallo, M.
AU - Baumann, P.
AU - Bécares, V.
AU - Bečvář, F.
AU - Belloni, F.
AU - Berthier, B.
AU - Berthoumieux, E.
AU - Billowes, J.
AU - Boccone, V.
AU - Bosnar, D.
AU - Brugger, M.
AU - Calviño, F.
AU - Cano-Ott, D.
AU - Capote, R.
AU - Carrapiço, C.
AU - Cennini, P.
AU - Cerutti, F.
AU - Chiaveri, E.
AU - Chin, M.
AU - Cortés, G.
AU - Cortés-Giraldo, M. A.
AU - Cosentino, L.
AU - Couture, A.
AU - Cox, J.
AU - David, S.
AU - Diakaki, M.
AU - Dillmann, I.
AU - Domingo-Pardo, C.
AU - Dressler, R.
AU - Dridi, W.
AU - Eleftheriadis, C.
AU - Embid-Segura, M.
AU - Ferrant, L.
AU - Ferrari, A.
AU - Finocchiaro, P.
AU - Fraval, K.
AU - Fujii, K.
AU - Furman, W.
AU - Ganesan, S.
AU - García, A. R.
AU - Giubrone, G.
AU - Gómez-Hornillos, M. B.
AU - Gonçalves, I. F.
AU - González-Romero, E.
AU - Goverdovski, A.
AU - Gramegna, F.
AU - Griesmayer, E.
AU - Guerrero, C.
AU - Gunsing, F.
AU - Gurusamy, P.
AU - Haight, R.
AU - Heil, M.
AU - Heinitz, S.
AU - Igashira, M.
AU - Isaev, S.
AU - Jenkins, D. G.
AU - Jericha, E.
AU - Kadi, Y.
AU - Käppeler, F.
AU - Karadimos, D.
AU - Karamanis, D.
AU - Kerveno, M.
AU - Ketlerov, V.
AU - Kivel, N.
AU - Kokkoris, M.
AU - Konovalov, V.
AU - Krtička, M.
AU - Kroll, J.
AU - Lampoudis, C.
AU - Langer, C.
AU - Lederer, C.
AU - Leeb, H.
AU - Losito, R.
AU - Lozano, M.
AU - Manousos, A.
AU - Marganiec, J.
AU - Martínez, T.
AU - Marrone, S.
AU - Massimi, C.
AU - Mastinu, P.
AU - Mendoza, E.
AU - Mengoni, A.
AU - Milazzo, P. M.
AU - Mingrone, F.
AU - Mirea, M.
AU - Mondelaers, W.
AU - Moreau, C.
AU - Mosconi, M.
AU - Musumarra, A.
AU - O'Brien, S.
AU - Pancin, J.
AU - Patronis, N.
AU - Pavlik, A.
AU - Pavlopoulos, P.
AU - Perkowski, J.
AU - Perrot, L.
AU - Pigni, M. T.
AU - Plag, R.
AU - Plompen, A.
AU - Plukis, L.
AU - Poch, A.
AU - Pretel, C.
AU - Praena, J.
AU - Quesada, J.
AU - Rauscher, T.
AU - Reifarth, R.
AU - Riego, A.
AU - Roman, F.
AU - Rudolf, G.
AU - Rubbia, C.
AU - Rullhusen, P.
AU - Salgado, J.
AU - Santos, C.
AU - Sarchiapone, L.
AU - Sarmento, R.
AU - Saxena, A.
AU - Schillebeeckx, P.
AU - Schmidt, S.
AU - Schumann, D.
AU - Stephan, C.
AU - Tagliente, G.
AU - Tain, J. L.
AU - Tavora, L.
AU - Terlizzi, R.
AU - Tsinganis, A.
AU - Valenta, S.
AU - Vannini, G.
AU - Variale, V.
AU - Vaz, P.
AU - Versaci, R.
AU - Vermeulen, M. J.
AU - Villamarin, D.
AU - Vincente, M. C.
AU - Vlachoudis, V.
AU - Vlastou, R.
AU - Voss, F.
AU - Wallner, A.
AU - Walter, S.
AU - Ware, T.
AU - Weigand, M.
AU - Weiß, C.
AU - Wiesher, M.
AU - Wisshak, K.
AU - Wright, T.
AU - Žugec, P.
PY - 2015/2/9
Y1 - 2015/2/9
N2 - The U238 to U235 fission cross section ratio has been determined at n-TOF up to ≈1 GeV, with two different detection systems, in different geometrical configurations. A total of four datasets has been collected and compared. They are all consistent to each other within the relative systematic uncertainty of 3-4%. The data collected at n-TOF have been suitably combined to yield a unique fission cross section ratio as a function of neutron energy. The result confirms current evaluations up to 200 MeV. Good agreement is also observed with theoretical calculations based on the INCL++/Gemini++ combination up to the highest measured energy. The n-TOF results may help solve a long-standing discrepancy between the two most important experimental datasets available so far above 20 MeV, while extending the neutron energy range for the first time up to ≈1 GeV.
AB - The U238 to U235 fission cross section ratio has been determined at n-TOF up to ≈1 GeV, with two different detection systems, in different geometrical configurations. A total of four datasets has been collected and compared. They are all consistent to each other within the relative systematic uncertainty of 3-4%. The data collected at n-TOF have been suitably combined to yield a unique fission cross section ratio as a function of neutron energy. The result confirms current evaluations up to 200 MeV. Good agreement is also observed with theoretical calculations based on the INCL++/Gemini++ combination up to the highest measured energy. The n-TOF results may help solve a long-standing discrepancy between the two most important experimental datasets available so far above 20 MeV, while extending the neutron energy range for the first time up to ≈1 GeV.
UR - http://www.scopus.com/inward/record.url?scp=84922570200&partnerID=8YFLogxK
U2 - 10.1103/PhysRevC.91.024602
DO - 10.1103/PhysRevC.91.024602
M3 - Article
AN - SCOPUS:84922570200
SN - 0556-2813
VL - 91
JO - Physical Review C
JF - Physical Review C
IS - 2
M1 - 024602
ER -