Correlation contributions to two-photon lanthanide absorption intensities: direct calculations for Eu2+ ions
The authors calculate two-photon intensities for 8S7/2 to 6PJ, 6DJ transitions in Eu2+ doped CaF2using eigenstates of the Coulomb and spin-orbit interactions within both the ground 4f7 and excited 4f65d configurations. Good agreement with experiment is achieved. In particular, they explain observed 8S7/2 to 6P7/2 transition intensities, which previous calculations had overestimated by a factor of more than 100. They also examine the relationship between the direct calculations presented here and various perturbation methods.
Journal of Physics: Condensed Matter
Burdick, Gary; Kooy, H.; and Reid, M., "Correlation contributions to two-photon lanthanide absorption intensities: direct calculations for Eu2+ ions" (1993). Faculty Publications. 72.