ABOSPRTION AND FLUORESCENCE SPECTRA OF TRIPLY IONIZED HOLMIUM IN CALCIUM TUNGSTATE,
Abstract
The energy levels of the quintuplet I ground term of Ho(3+) in single crystals of CaWO4 were established by absorption and fluorescence spectra measurements. The measurements were made using crystals at temperatures near 2, 20, and 85K. Most of the observed transitions can be accounted for by the electric dipole selection rules. Magnetic dipole selection rules cannot be ruled out for some of the lower energy transitions, however. Calculations were made to determine the effects of the crystalline host material on the Ho(3+) energy levels. An effective Hamiltonian of the form suggested by Karayianis was diagonalized in a basis of Russell-Saunders wave functions to obtain the calculated energy levels and wave functions for Ho(3+). Such a calculation takes into account the complete J-mixing of the states within the ground term and is equivalent to determining the effects of the spin-orbit interaction to better than second-order. In the calculation, the best agreement between the theoretical and experimental energy levels gives an rms deviation of 10/cm. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1970
- Accession Number
- AD0707380
Entities
People
- D. E. Wortman
- David Sanders
Organizations
- Harry Diamond Laboratories