Fundamental aspects of molecular plating and production of smooth crack-free Nd targets
- 254 Downloads
A general understanding of the molecular plating process was obtained recently, which serves as a first step towards further improvements of the method aiming, for example, at the production of smooth, crack-free targets for nuclear physics applications. Constant current density electrolysis experiments were performed in organic media containing the model electrolyte Nd(NO3)3·6H2O. The process was investigated by considering influences of the electrolyte concentration (0.11, 0.22, 0.44 mM), the surface roughness of the deposition substrates (a few tens of nm), and the plating solvent (an isopropanol/isobutanol mixture, and N,N-dimethylformamide). The response of the process to changes of these parameters was monitored by recording cell potential curves and by characterizing the obtained deposits with γ-ray spectroscopy, X-ray photoelectron spectroscopy, and atomic force microscopy. By changing the solvent from isopropanol/isobutanol mixtures to N,N-dimethylformamide, we have succeeded in producing smooth, crack-free Nd targets.
KeywordsThin layers Neodymium Molecular plating γ-ray spectroscopy X-ray photoelectron spectroscopy (XPS) Atomic force microscopy (AFM)
The authors thank the staff of the TRIGA Mainz for performing the irradiations, and Dr. T. Lauer for performing the coating of the Si wafers. A. Vascon acknowledges financial support from the German Federal Ministry of Science and Education (BMBF) under Contract number 02NUK013E.
- 5.Watson PR, Loveland W, Zielinski PM, Gregorich KE, Nitsche H (2004) Nucl Instrum Methods B 226:543–548Google Scholar
- 8.Vascon A, Santi S, Isse AA, Kühle A, Reich T, Drebert J, Eberhardt K, Düllmann ChE (2013) Nucl Instrum Methods A 714:163–175Google Scholar
- 9.Wagner CD, Riggs WM, Davis LE, Moulder JF, Muilenberg GE (1979) Handbook of X-ray photoelectron spectroscopy. Perkin-Elmer Corporation, Physical Electronics Division, Eden PrairieGoogle Scholar
- 10.Lide DR (ed) (2006) CRC Handbook of Chemistry and Physics, 87th edn. CRC Press, Boca RatonGoogle Scholar
- 12.Horcas R, Fernandez JM, Gomez-Rodriguez J, Colchero J, Gomez-Herrero AM, Baro W (2007) Rev Sci Instrum 78:013705-1Google Scholar