Journal
COMPTES RENDUS PHYSIQUE
Volume 16, Issue 5, Pages 516-523Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crhy.2015.02.007
Keywords
Atomic clock; Mossbauer spectroscopy; Th-229 isomer; Hyperfine structure; Electronic bridge; Ion trap
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We review the ideas and concepts for a clock that is based on a radiative transition in the nucleus rather than in the electron shell. This type of clock offers advantages like an insensitivity against field-induced systematic frequency shifts and the opportunity to obtain high stability from interrogating many nuclei in the solid state. Experimental work concentrates on the low-energy (about 8 eV) isomeric transition in Th-229. We review the status of the experiments that aim at a direct optical observation of this transition and outline the plans for high-resolution laser spectroscopy experiments. (C) 2015 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
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