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Title: Isolation of 163Ho from dysprosium target material by HPLC for neutrino mass measurements

Journal Article · · Radiochimica Acta
 [1];  [1];  [1];  [1];  [2];  [2];  [1];  [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Univ. of Wisconsin, Madison, WI (United States)
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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. As a result, the isolated Ho fraction contained 24.8 ±1.3 ng of 163Ho corresponding to holmium recovery of 72 ± 3%.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1239303
Report Number(s):
LA-UR-14-28326
Journal Information:
Radiochimica Acta, Vol. 103, Issue 8; ISSN 0033-8230
Publisher:
de GruyterCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

Cited By (7)

Development of Holmium-163 Electron-Capture Spectroscopy with Transition-Edge Sensors journal January 2016
Production of highly charged ions of rare species by laser-induced desorption inside an electron beam ion trap journal December 2019
The electron capture in 163Ho experiment – ECHo journal June 2017
Production and separation of 163Ho for nuclear physics experiments journal August 2018
The electron capture in 163Ho experiment – ECHo text January 2017
The electron capture in $^{163}$Ho experiment – ECHo text January 2017
Development of holmium-163 electron-capture spectroscopy with transition-edge sensors text January 2015

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
HPLC
163Ho
lanthanide separation
neutrino mass
preparative HPLC