Accession Number:

AD0673697

Title:

ABSORPTION AND FLUORESCENCE SPECTRA AND CRYSTAL FIELD PARAMETERS OF TRIPLY IONIZED TERBIUM IN CALCIUM TUNGSTATE,

Descriptive Note:

Corporate Author:

HARRY DIAMOND LABS WASHINGTON D C

Personal Author(s):

Report Date:

1968-02-01

Pagination or Media Count:

30.0

Abstract:

A study was made of the absorption and fluorescence spectra of Tb3 in single crystals of CaWO4 to establish the energy level 7F ground term of Tb3 and determine the crystal field parameters for CaWO4. The crystals were used at temperatures between about 4.2 and 77K where emissions were observed from the 5D3 and 5D4 multiplets to the 7FJ states and where absorption transitions from the ground 7F6 multiplet to the 7F0, 7F1, 7F2, and 7F3 multiplets were recorded. The 7F energy levels were fitted using an effective Hamiltonian for the ground term where the states were described by Russell-Saunders wave functions. This calculation takes into account the complete J-mixing of the states within the ground term by the crystal field and is equivalent to determining the effects of the spin-orbit interaction to second-order. Author

Subject Categories:

  • Lasers and Masers
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE