Investigation of the surrogate-reaction method via the simultaneous measurement of gamma-emission and fission probabilities
Paper i proceeding, 2017

We present the results of two experiments where we have measured for the first time simultaneously the fission and gamma-decay probabilities induced by different surrogate reactions. In particular, we have investigated the 238 U(d,p), 238 U( 3 He,t) and 238 U( 3 He, 4 He) reactions as surrogates for the neutron-induced n + 238 U, n + 237 Np and n + 236 U reactions, respectively. In the region where gamma emission, neutron emission and fission compete, our results for the fission probabilities agree fairly well with the neutron-induced data, whereas our gamma-decay probabilities are significantly higher than the neutron-induced data. The interpretation of these results is not obvious and is discussed within the framework of the statistical model with preliminary results for calculated spin-parity distributions populated in surrogate reactions. We also present future plans for surrogate-reaction studies in inverse kinematics with radioactive-ion beams at storage rings.

Författare

B. Jurado

Centre d'Etudes Nucleaires de Bordeaux Gradignan

P. Marini

Centre d'Etudes Nucleaires de Bordeaux Gradignan

L. Mathieu

Centre d'Etudes Nucleaires de Bordeaux Gradignan

M. Aiche

Centre d'Etudes Nucleaires de Bordeaux Gradignan

S. Czajkowski

Centre d'Etudes Nucleaires de Bordeaux Gradignan

I. Tsekhanovich

Centre d'Etudes Nucleaires de Bordeaux Gradignan

L. Audouin

Institut de Physique Nucleaire Orsay

G. Boutoux

Centre Lasers Intenses et Applications

D. Denis-Petit

CEA Dam

M. Guttormsen

Universitetet i Oslo

G. Kessedjian

Universite Grenoble Alpes

M. Lebois

Institut de Physique Nucleaire Orsay

V. Meot

CEA Dam

Andreas Oberstedt

Chalmers, Fysik

S. Oberstedt

European Commission Joint Research Centre, Institute for Reference Materials and Measurements

O. Roig

CEA Dam

O. Sérot

CEA Cadarache

L. Tassan-Got

Institut de Physique Nucleaire Orsay

J.N. Wilson

Institut de Physique Nucleaire Orsay

EPJ Web of Conferences

21016275 (ISSN) 2100014X (eISSN)

Vol. 146 11006

Ämneskategorier

Subatomär fysik

DOI

10.1051/epjconf/201714611006

ISBN

978-275989020-0