HAL : in2p3-00726669, version 1

arXiv : 1208.6115

DOI : 10.1103/PhysRevC.87.034601

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Physical Review C 87 (2013) 034601

High-precision measurement of total fission cross sections in spallation reactions of 208Pb and 238U

K. -H. Schmidt, B. Jurado1, R. Pleskac, M. V. Ricciardi, J. Benlliure, T. Enqvist, F. Farget2, A. Bacquias, L. Giot3, V. Henzl, D. Henzlova, A. Kelic-Heil, S. Leray4, S. Lukic, Son Nguyen Ngoc, A. Boudard4, E. Casarejos, M. Fernandez, T. Kurtukian1, P. Nadtochy, D. Perez, C. Schmitt2

(2013)

Total cross sections for proton- and deuteron-induced-fission of 208Pb and 238U have been determined in the energy range between 500 MeV and 1 GeV. The experiment has been performed in inverse kinematics at GSI Darmstadt, facilitating the counting of the projectiles and the identification of the reaction products. High precision between 5 and 7 percent has been achieved by individually counting the beam particles and by registering both fission fragments in coincidence with high efficiency and full Z resolution. Fission was clearly distinguished from other reaction channels. The results were found to deviate by up to 30 percent from Prokofiev's systematics on total fission cross sections. There is good agreement with an elaborate experiment performed in direct kinematics.

1 :	CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan
2 :	GANIL - Grand Accélérateur National d'Ions Lourds
3 :	SUBATECH - Laboratoire SUBATECH Nantes
4 :	IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (ex DAPNIA)

équipe(s) de recherche : ACEN NEX

Thème(s)

:

Physique/Physique Nucléaire Expérimentale

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Contributeur : Michel Lion <>

Soumis le : Vendredi 31 Août 2012, 08:49:31

Dernière modification le : Mercredi 27 Mars 2013, 09:44:49