Improving material properties and performance of nuclear targets for transmutation-relevant experiments
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To improve the properties and performance of thin layers produced by molecular plating as targets for nuclear experiments investigations with lanthanide elements (i.e., natural Nd and 147Sm-enriched Sm) were carried out. Plating parameters like roughness of the deposition substrate, plating solvent, electrolyte concentration, and applied current density were varied. The influence of each parameter on the properties of the layers was studied by characterizing the deposits. The characterizations showed that nuclear targets perform differently depending on their layer properties. The results obtained from the investigations were applied for the quantitative preparation of homogeneous large-area (i.e., 42 cm2) 242Pu targets to be used for transmutation-relevant experiments.
KeywordsMolecular plating Improved layer properties α-Particle spectroscopy 242Pu Transmutation
The authors thank the staff of the TRIGA Mainz for performing the irradiations, Dr. T. Lauer for performing the coating of the Si wafers, and Prof. Dr. K. Lützenkirchen as well as Dr. T. Wiss for facilitating the analyses of the Pu targets at the Institute for Transuranium Elements of the Joint Research Centre of the European Commission. A. Vascon acknowledges financial support from the German Federal Ministry of Science and Education (BMBF) under contract numbers 02NUK13A and 02NUK13E.
- 1.TRAKULA website (www.hzdr.de/TRAKULA) Accessed 27 Jan 2015