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|Title:||Preparation of high-resolution 238U alpha-sources by electrodeposition from various electrolyte solutions|
|Authors:||JOBBAGY VIKTOR; CRESPO M. T.; VAN AMMEL Raf; MAROULI MARIA; MOENS Andre; POMME Stefaan; GARCÍA-TORAÑO E.|
|Citation:||Proceedings of the 2nd IMEKO TC 11 International Symposium: Metrological Infrastructure p. 1-4|
|JRC Publication N°:||JRC66074|
|Type:||Contributions to Conferences|
|Abstract:||In this paper the source preparation procedure for high-resolution 238U sources is described. This work was done in a collaboration between CIEMAT and IRMM within the frame of MetroFission, a project of the European Metrology Research Programme, in order to determine the alpha-emission probabilities of 238U. 238U was deposited from organic (iso-propanol) and inorganic (H2SO4/(NH4)2SO4, saturated NH4NO3) electrolyte solutions on metal backings. Preliminary results show that the 238U source quality is significantly better when making them in saturated NH4NO3 than in the two other electrolytes. By this method sources of 18,6-22 mm diameter, 26 μg cm-2 surface density, 16-18 keV resolution and a peak to valley ratio higher than 50 could be made. This reconciles the inherently opposing requirements of high resolution and sufficient count rate needed to determine the alpha–emission probabilities accurately.|
|JRC Institute:||Institute for Reference Materials and Measurements|
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