  We report a candidate with unique advantages in the cultivation of
solid-state nuclear clock material, Th:SrF2 crystal. It not only has a
segregation coefficient close to 1, which can achieve highly efficient and
uniform doping of Th, but also ensures a high transmittance (~69% at 150 nm)
while achieving extremely high doping concentration (232Th>6*10^20 cm^(-3). In
addition, SrF2 crystal will not be irradiated-colored under strong {\alpha}
radiation like CaF2 crystal, Th:SrF2 crystal is expected to fully unleash its
high concentration doping characteristics while ensuring its transmission
performance in nuclear transition band not be severely affected by 229Th
radiation damage.
