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Isolation of 163Ho from dysprosium target material by HPLC for neutrino mass measurements
- Source :
- Radiochimica Acta. 103:577-585
- Publication Year :
- 2015
- Publisher :
- Walter de Gruyter GmbH, 2015.
-
Abstract
- The rare earth isotope 163Ho is of interest for neutrino mass measurements. This report describes the isolation of 163Ho from a proton-irradiated dysprosium target and its purification. A Dy metal target was irradiated with 16 MeV protons for 10 h. After target dissolution, 163Ho was separated from the bulk Dy via cation-exchange high performance liquid chromatography using 70 mmol dm –3 α-hydroxyisobutyric acid as the mobile phase. Subsequent purification of the collected Ho fraction was performed to remove the α-hydroxyisobutyrate chelating agent and to concentrate the Ho in a low ionic strength aqueous matrix. The final solution was characterized by MC-ICP-MS to determine the 163Ho/165Ho ratio, 163Ho and the residual Dy content. The HPLC purification process resulted in a decontamination factor 1.4E5 for Dy. The isolated Ho fraction contained 24.8 ± 1.3 ng of 163Ho corresponding to holmium recovery of 72 ± 3%.
Details
- ISSN :
- 21933405 and 00338230
- Volume :
- 103
- Database :
- OpenAIRE
- Journal :
- Radiochimica Acta
- Accession number :
- edsair.doi...........7e226df1ff7f40e15b7c36a3bf899bca