Alternative approach to populate and study the 229Th nuclear clock isomer
Verlinde, M., Kraemer, S., Moens, J., Chrysalidis, K., Correia, J. G., Cottenier, S., De Witte, H., Fedorov, D. V., Fedosseev, V. N., Ferrer, R., Fraile, L. M., Geldhof, S., Granados, C. A., Laatiaoui, M., Lima, T. A. L., Lin, P.-C., Manea, V., Marsh, B. A., Moore, I., . . . Wilkins, S. G. (2019). Alternative approach to populate and study the 229Th nuclear clock isomer. Physical Review C, 100(2), Article 024315. https://doi.org/10.1103/PhysRevC.100.024315
Published inPhysical Review C
Wahl, U. |
© The Authors, 2019
A new approach to observe the radiative decay of the 229Th nuclear isomer, and to determine its energy and radiative lifetime, is presented. Situated at a uniquely low excitation energy, this nuclear state might be a key ingredient for the development of a nuclear clock or a nuclear laser and, the search for time variations of fundamental constants like the fine structure constant. The isomer’s γ decay towards the ground state will be studied with a high-resolution vacuum ultraviolet (VUV) spectrometer after its production by the β decay of 229Ac. The novel production method presents a number of advantages asserting its competitive nature with respect to the commonly used 233U α-decay recoil source. In this paper, a feasibility analysis of this new concept, and an experimental investigation of its key ingredients, using a pure 229Ac ion beam produced at the ISOLDE radioactive beam facility, is reported.
PublisherAmerican Physical Society
ISSN Search the Publication Forum2469-9985
Publication in research information system
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Related funder(s)European Commission
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about fundingThis work has received funding from Research Foundation Flanders (FWO, Belgium), from the Excellence of Science program (EOS, FWO-FNRS, Belgium), by GOA/2015/010 (BOF KU Leuven), by the Interuniversity Attraction Poles Program initiated by the Belgian Science Policy Office (BriX network P7/12), from the European Union’s Horizon 2020 research and innovation program under Grants Agreement No. 654002 (ENSAR) and No. 824096 (RADIATE), from the European Research Council under the European Union’s Seventh Framework Program (ERC-2011-AdG291561-HELIOS), from the Spanish MINECO via Project No. FPA-2015-65035-P and from the FCT-Portugal, Project No. CERN-FIS-PAR-0005-2017. M.V. is supported by an FWO grant (Aspirant - 1121820N). ...
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