A1 Journal article (refereed)
Alternative approach to populate and study the 229Th nuclear clock isomer (2019)


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. et al. (2019). Alternative approach to populate and study the 229Th nuclear clock isomer. Physical Review C, 100 (2), 024315. DOI: 10.1103/PhysRevC.100.024315


JYU authors or editors


Publication details

All authors or editors: Verlinde, M.; Kraemer, S.; Moens, J.; Chrysalidis, K.; Correia, J. G.; Cottenier, S.; De Witte, H.; Fedorov, D. V.; Fedosseev, V. N.; Ferrer, R.; et al.

Journal or series: Physical Review C

ISSN: 2469-9985

eISSN: 2469-9993

Publication year: 2019

Volume: 100

Issue number: 2

Article number: 024315

Publisher: American Physical Society

Publication country: United States

Publication language: English

DOI: http://doi.org/10.1103/PhysRevC.100.024315

Open Access: Publication channel is not openly available

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/65291

Web address of parallel published publication (pre-print): https://arxiv.org/abs/1904.10245


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 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.


Keywords: nuclear physics

Free keywords: beta decay; isomer decays; nuclear structure and decays


Contributing organizations


Related projects

ENSAR2 European Nuclear Science and Application Research 2
Jokinen, Ari
European Commission
01/03/2016-31/08/2020


Ministry reporting: Yes

Reporting Year: 2019

JUFO rating: 2


Last updated on 2020-18-08 at 13:20