Thorium-229 nuclear clock

Nuclear clock

Ab initio calculations of ²²⁹Th band-to-band internal conversion rate in ²²⁹ThO₂

U. C. Perera, H. B. Tran Tan, H. W. T. Morgan, E. R. Hudson, D. A. Rhen, and A. Derevianko

Physical Review C 114, 054309 (2026)

Nuclear clock

Defect assignment of the clock site in ²²⁹Th:CaF₂

D. A. Rhen, H. W. T. Morgan, H. E. Mason, H. B. Tran Tan, R. Elwell, et al.

arXiv:2607.12202

Review

Colloquium: Nuclear Clocks

A. Derevianko, R. T. Elwell, and E. R. Hudson

arXiv:2606.11048

Nuclear clock

Laser-based conversion electron Mössbauer spectroscopy of ²²⁹ThO₂

R. Elwell, J. E. S. Terhune, C. Schneider, H. W. T. Morgan, et al.

Nature 648, 300

Nuclear clock

Host-dependent frequency offsets in ²²⁹Th nuclear clockwork

U. C. Perera, H. W. T. Morgan, E. R. Hudson, and A. Derevianko

Physical Review Letters 135, 123001

Nuclear clock

Theory of Internal Conversion of the ²²⁹Th Nuclear Isomer in Solid-State Hosts

H. W. T. Morgan, H. B. Tran Tan, R. Elwell, A. N. Alexandrova, E. R. Hudson, and A. Derevianko

Physical Review Letters 134, 253801

Nuclear clock

Photoinduced quenching of the ²²⁹Th isomer in a solid-state host

J. Terhune, R. Elwell, H. B. Tran Tan, U. C. Perera, et al.

Physical Review Research 7, L022062

Nuclear clock

Design of new thorium nuclear clock materials based on polyatomic ions

Nuclear clock

Proposal and theoretical investigation of ²²⁹Th-doped nonlinear optical crystals for compact solid-state clocks

Nuclear clock

Radiative decay of the ²²⁹ᵐTh nuclear clock isomer in different host materials

Nuclear clock

²²⁹ThF₄ thin films for solid-state nuclear clocks

Nuclear clock

Laser excitation of the ²²⁹Th nuclear isomeric transition in a solid-state host

Nuclear clock

The concept of laser-based conversion electron Mössbauer spectroscopy for a precise energy determination of ²²⁹ᵐTh

Nuclear clock

Radiative lifetime and energy of the low-energy isomeric level in ²²⁹Th

Nuclear clock

Results of a Direct Search Using Synchrotron Radiation for the Low-Energy ²²⁹Th Nuclear Isomeric Transition

Instrumentation

Low-threshold ultraviolet solid-state laser based on a Ce³⁺:LiCaAlF₆ crystal resonator

Nuclear clock

Optical spectroscopy of an atomic nucleus: Progress toward direct observation of the ²²⁹Th isomer transition

Nuclear clock

Progress towards fabrication of ²²⁹Th-doped high energy band-gap crystals for use as a solid-state optical frequency reference

Nuclear clock

Constraining the Evolution of the Fundamental Constants with a Solid-State Optical Frequency Reference Based on the ²²⁹Th Nucleus

Nuclear clock

Computer modelling of thorium doping in LiCaAlF₆ and LiSrAlF₆: application to the development of solid state optical frequency devices