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Contribution Poster direct neutrino mass

Poster (participating in poster prize competition)

Production, Separation and Implantation of $^{163}$Ho for Neutrino Mass Measurements


  • Mr. Tom KIECK

Primary authors


Authorship annotation

for the ECHo collaboration

Session and Location

Monday Session, Poster Wall #9 (Robert-Schumann-Room)

Abstract content

The ECHo collaboration aims at measuring the electron neutrino mass by recording the spectrum following electron capture of $^{163}$Ho using metallic magnetic calorimeters (MMCs).The radioisotope $^{163}$Ho is produced from enriched $^{162}$Er in the ILL high flux nuclear reactor, chemically purified and mass separated and is fully embedded into the 180x180 µm$^{2}$ Au-absorber of the ECHo MMCs. Resonance ionization mass separation guarantees elemental and isotopic selectivity for ultra-pure $^{163}$Ho ion implantation with a sub millimeter beam spot size. On-line in-situ deposition of Au using pulsed laser deposition (PLD) ensures homogeneous $^{163}$Ho/Au layer formation in the implantation area. To verify the purity of the ECHo source material from production up to implantation and data taking a varity of different analytical techniques is applied, including 𝛾-ray spectrometry, NAA, ICP-MS and RIMS.

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