Optical Spectra of Tripositive Curium−244 in Lanthanum Trichloride

Absorption and emission optical spectra are reported for Cm³⁺ in LaCl₃ between 3000 and 8000 Å. These data are explained in terms of the Racah, spin—orbit, and configuration‐interaction parameters: E⁰=4939.29 E¹=4621.47, E²=17.70, E³=399.42, ζ=2841.66, α=57.08, β=−4761.60 cm⁻¹, respectively. Crystal‐field splitting of the ground state ${}^8{S}_{\frac{7}{2}}$ is observed.