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Article
Report number arXiv:1904.10245
Title Alternative approach to populate and study the 229Th nuclear clock isomer
Author(s) Verlinde, M. (Leuven U.) ; Kraemer, S. (Leuven U.) ; Moens, J. (Leuven U.) ; Chrysalidis, K. (CERN) ; Correia, J.G. (Lisbon, IST) ; Cottenier, S. (U. Gent (main) ; Unlisted, BE) ; De Witte, H. (Leuven U.) ; Fedorov, D.V. (Kurchatov Inst., Moscow) ; Fedosseev, V.N. (CERN) ; Ferrer, R. (Leuven U.) Show all 27 authors
Publication 2019-08-12
Imprint 2019-04-23
Number of pages 10
Note 11 pages, 5 figures, 2 tables
In: Phys. Rev. C 100 (2019) 024315
DOI 10.1103/PhysRevC.100.024315
Subject category nucl-ex ; Nuclear Physics - Experiment
Abstract 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, a nuclear laser and the search for time variations of the fundamental constants. The isomer's γ decay towards the ground state will be studied with a high-resolution 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.
Copyright/License preprint: (License: arXiv nonexclusive-distrib 1.0)
Publication: © 2019-2025 authors



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 Record created 2019-08-22, last modified 2024-05-08


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