@ARTICLE{,
  author = {Elwell, R. and Schneider, Christian and Jeet, Justin and Terhune, J. E. S. and Morgan, H. W. T. and Alexandrova, A. N. and Tran Tan, H. B. and Derevianko, Andrei and Hudson, Eric R.},
  title = {Laser Excitation of the \testsuperscript{229}{Th} Nuclear Isomeric Transition in a Solid-State Host},
  journal = {Phys. Rev. Lett.},
  year = {2024},
  volume = {133},
  pages = {013201},
  month = {Jul},
  url = {https://link.aps.org/doi/10.1103/PhysRevLett.133.013201},
  doi = {10.1103/PhysRevLett.133.013201},
  abstract = {LiSrAlF$_6$ crystals doped with \textsuperscript{229}Th are used in a laser-based search for the nuclear isomeric transition. Two spectroscopic features near the nuclear transition energy are observed. The first is a broad excitation feature that produces redshifted fluorescence that decays with a timescale of a few seconds. The second is a narrow, laser-linewidth-limited spectral feature at $\unit[148.382\,19\,(4)_\text{stat}\,(20)_\text{sys}]{nm}$ [$\unit[2020\,407.3\,(5)_\text{stat}\,(30)_\text{sys}]{GHz}$] that decays with a lifetime of $\unit[568\,(13)_\text{stat}\,(20)_\text{sys}]{s}$. This feature is assigned to the excitation of the \textsuperscript{229}Th nuclear isomeric state, whose energy is found to be $\unit[8.355\,733\,(2)_\text{stat}\,(10)_\text{sys}]{eV}$ in \textsuperscript{229}Th:LiSrAlF$_6$.}
}