Rostock 2019 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 3: Mass Spectrometry - Posters
MS 3.7: Poster
Dienstag, 12. März 2019, 16:30–18:15, S Fobau Physik
The Heidelberg compact EBIT as a source for highly charged holmium ions for high-precision mass spectrometry at Pentatrap — •Ch. König1, 2, J. R. Crespo López-Urrutia1, M. Door1, Ch. E. Düllmann3, P. Filianin1, W. Huang1, K. Kromer1, 2, D. Renisch3, A. Rischka1, R. X. Schüssler1, Ch. Schweiger1, S. Eliseev1, and K. Blaum1 — 1Max-Planck-Institut für Kernphysik, 69117 Heidelberg — 2Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg — 3Johannes Gutenberg-Universität Mainz, 55128 Mainz
The electron capture decay of 163Ho to 163Dy is a promising candidate for the determination of mνe in the sub-eV range. For this purpose the ECHo collaboration [1] aims to perform a calorimetric measurement of the 163Dy* de-excitation spectrum. With its Penning-trap setup the Pentatrap [2] experiment will contribute an independent Q-value as a consistency check acquired by a high-percision mass measurement of the mother and daughter nuclide with a relative mass ratio uncertainty of 10−11. In order to achieve such an accuracy highly charged ions are necessary which can be produced in electron beam ion traps. Ions of various masses (40-165 amu) have been successfully produced, in particular charge states of up to 45+ have been achieved for 165Ho using a sample size of about 1012 atoms. The injection of the atoms into a Heidelberg compact EBIT [3] is done via in-trap laser ablation.
[1] Gastaldo, L. et al., Eur. Phys. J. Special Topics 226, 1623 (2017)
[2] Repp, J. et al., Appl. Phys. B 107, 983 (2012)
[3] Micke, P. et al., Rev. Sci. Instrum. 89, 063109 (2018)