Quantitative molecular plating of large-area 242Pu Targets with improved layer properties

Autor: Vascon, A., Runke, J., Trautmann, N., Cremer, B., Eberhardt, K., Düllmann, C. E.
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Applied Radiation and Isotopes 95(2015), 36-43
Popis: For measurements of the neutron-induced fission cross section of 242Pu, large-area (42 cm2) 242Pu targets were prepared on Ti-coated Si wafers by means of constant current density molecular plating. Radiochemical separations were performed prior to the platings. Quantitative deposition yields (495%) were determined for all targets by means of alpha-particle spectroscopy. Layer densities in the range of 100–150 μg/cm2 were obtained. The homogeneity of the targets was studied by radiographic imaging. A comparative study between the quality of the layers produced on the Ti-coated Si wafers and the quality of layers grown on normal Ti foils was carried out by applying scanning electron microscopy and energy dispersive X-ray spectroscopy. Ti-coated Si wafers resulted clearly superior to Ti foils in the production of homogeneous 242Pu layers with minimum defectivity.
Databáze: OpenAIRE