Influence of density and release properties of UCx targets on the fission product yields at ALTO

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:468

Article

Guillot, Julien¹  Roussiere, Brigitte¹  Tusseau-Nenez, Sandrine²  Grebenkov, Denis S.²  Ignacio, Maxime² 

[1] Univ Paris Saclay, Lab Phys Infinis Irene Joliot Curie 2, CNRS, IN2P3,UMR 9012, F-91406 Orsay, France

[2] Ecole Polytech, CNRS, Lab Phys Matiere Condensee, UMR 7643,IP Paris, Route Saclay, F-91128 Palaiseau, France

关键词: Uranium carbide;    FLUKA;    Photofission;    Release;    Radioactive beams;    Diffusion;   

DOI  :  10.1016/j.nimb.2020.02.016

来源: Elsevier

【 摘 要 】

To study the influence of the structural properties of UCx targets on their release properties, several types of targets using different precursors (carbon and uranium) were synthesized, characterized, irradiated and heated leading to the determination of the released fractions of eight elements. In this article, the production rates of these targets are estimated under the use conditions at ALTO, i.e. with targets bombarded by an electron beam (10 mu A, 50 MeV). We have simulated the fission number produced using the FLUKA code. Then, we have determined the release efficiency as a function of the half-life of the isotopes using average diffusion coefficients deduced for the elements studied previously. Finally, we compare the production rates obtained from the various targets and conclude that the target must be adapted to the element studied. It is crucial to find in each case the best compromise between the target density and the release efficiency.

【 授权许可】

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