SIDONIE: an electromagnetic isotope separator for preparation of high purity thin targets

摘要

The new configuration of the electromagnetic isotope separator SIDONIE is presented. The different elements composing this separator are described. The ion beam, produced by a "Bernas-Nier" source, is separated by a high dispersion analyzing magnet. Thin targets of highly enriched isotopes are achieved by deceleration of the selected ion beam. The thickness of the targets can reach a few mg/cm~2. The homogeneity and thickness of the target are measured by Rutherford backscattering spectrometry. The isotopic enrichment factor obtained with SIDONIE is evaluated by measurement of alpha emission of a ~(235)U thin target. Finally, an alpha spectrum of metrology measurement of ~(238)U is presented. A thin layer of pure ~(238)U produced by SIDONIE has been measured with a high-resolution alpha spectrometer equipped with an optimized silicon junction detector.