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Authors: Haas, Raphael
Kieck, Tom
Budker, Dmitry
Düllmann, Christoph E.
Groot-Berning, Karin
Li, Wenbing
Renisch, Dennis
Schmidt-Kaler, Ferdinand
Stopp, Felix
Viatkina, Anna
Title: Development of a recoil ion source providing slow Th ions including 229(m)Th in a broad charge state distribution
Online publication date: 25-May-2021
Year of first publication: 2020
Language: english
Abstract: Ions of the isomer 229mTh are a topic of high interest for the construction of a “nuclear clock” and in the field of fundamental physics for testing symmetries of nature. They can be efficiently captured in Paul traps which are ideal for performing high precision quantum logic spectroscopy. Trapping and identification of long-lived 232Th+ ions from a laser ablation source was already demonstrated by the TACTICa collaboration on Trapping And Cooling of Thorium Ions with Calcium. The 229mTh is most easily accessible as α-decay daughter of the decay of 233U. We report on the development of a source for slow Th ions, including 229mTh for the TACTICa experiment. The 229mTh source is currently under construction and comprises a 233U monolayer, from which 229mTh ions recoil. These are decelerated in an electric field. Conservation of the full initial charge state distribution of the 229mTh recoil ions is one of the unique features of this source. We present ion-flight simulations for our adopted layout and give a final source design. This source will provide Th ions in their original charge state at energies suitable for capture in a linear Paul trap for spectroscopy investigations.
DDC: 530 Physik
530 Physics
540 Chemie
540 Chemistry and allied sciences
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 08 Physik, Mathematik u. Informatik
FB 09 Chemie, Pharmazie u. Geowissensch.
Place: Mainz
Version: Published version
Publication type: Zeitschriftenaufsatz
License: CC BY
Information on rights of use:
Journal: Hyperfine interactions
Pages or article number: 25
Publisher: Springer Science + Business Media B.V.
Publisher place: Dordrecht u.a.
Issue date: 2020
ISSN: 1572-9540
Publisher URL:
Publisher DOI: 10.1007/s10751-019-1688-2
Appears in collections:JGU-Publikationen

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