Physical Review Research (Jan 2025)
Radiative decay of the ^{229m}Th nuclear clock isomer in different host materials
- S. V. Pineda,
- P. Chhetri,
- S. Bara,
- Y. Elskens,
- S. Casci,
- A. N. Alexandrova,
- M. Au,
- M. Athanasakis-Kaklamanakis,
- M. Bartokos,
- K. Beeks,
- C. Bernerd,
- A. Claessens,
- K. Chrysalidis,
- T. E. Cocolios,
- J. G. Correia,
- H. De Witte,
- R. Elwell,
- R. Ferrer,
- R. Heinke,
- E. R. Hudson,
- F. Ivandikov,
- Yu. Kudryavtsev,
- U. Köster,
- S. Kraemer,
- M. Laatiaoui,
- R. Lica,
- C. Merckling,
- I. Morawetz,
- H. W. T. Morgan,
- D. Moritz,
- L. M. C. Pereira,
- S. Raeder,
- S. Rothe,
- F. Schaden,
- K. Scharl,
- T. Schumm,
- S. Stegemann,
- J. Terhune,
- P. G. Thirolf,
- S. M. Tunhuma,
- P. Van Den Bergh,
- P. Van Duppen,
- A. Vantomme,
- U. Wahl,
- Z. Yue
Affiliations
- S. V. Pineda
- P. Chhetri
- S. Bara
- Y. Elskens
- S. Casci
- A. N. Alexandrova
- M. Au
- M. Athanasakis-Kaklamanakis
- M. Bartokos
- K. Beeks
- C. Bernerd
- A. Claessens
- K. Chrysalidis
- T. E. Cocolios
- J. G. Correia
- H. De Witte
- R. Elwell
- R. Ferrer
- R. Heinke
- E. R. Hudson
- F. Ivandikov
- Yu. Kudryavtsev
- U. Köster
- S. Kraemer
- M. Laatiaoui
- R. Lica
- C. Merckling
- I. Morawetz
- H. W. T. Morgan
- D. Moritz
- L. M. C. Pereira
- S. Raeder
- S. Rothe
- F. Schaden
- K. Scharl
- T. Schumm
- S. Stegemann
- J. Terhune
- P. G. Thirolf
- S. M. Tunhuma
- P. Van Den Bergh
- P. Van Duppen
- A. Vantomme
- U. Wahl
- Z. Yue
- DOI
- https://doi.org/10.1103/PhysRevResearch.7.013052
- Journal volume & issue
-
Vol. 7,
no. 1
p. 013052
Abstract
A comparative vacuum ultraviolet spectroscopy study conducted at ISOLDE-CERN of the radiative decay of the ^{229m}Th nuclear clock isomer embedded in different host materials is reported. The ratio of the number of radiative decay photons and the number of ^{229m}Th embedded are determined for single crystalline CaF_{2}, MgF_{2}, LiSrAlF_{6}, AlN, and amorphous SiO_{2}. For the latter two materials, no radiative decay signal was observed and an upper limit of the ratio is reported. The radiative decay wavelength was determined in LiSrAlF_{6} and CaF_{2}, reducing its uncertainty by a factor of 2.5 relative to our previous measurement. This value is in agreement with the recently reported improved values from laser excitation.
