Abstract
The intensities of Tb3+ ground state absorption and 5D4 fluorescence transitions in the TbCl3(AlCl3)x(g) complex system have been analyzed according to the Judd–Ofelt theory of forced electric dipole transitions. This represents the first successful attempt to utilize observations of both absorption and fluorescence spectra in establishing the parameters of the theory. The positions of 19 Tb3+ energy levels were determined from the spectra and used to perform a parametric analysis of the Hamiltonian matrix for the ion’s 4f8 configuration. The wave functions obtained in diagonalization of the Hamiltonian were used to calculate unit tensor operator matrix elements required in the intensity analysis. A good fit to the measurements was obtained with intensity parameters W2 = 20.5, W4 = 2.3, and W6 = 3.0 pm2. These results were then used to compute intensities of fluorescence transitions from the higher lying 5D3, 5G6, and 5L10 levels, yielding additional qualitative agreement between theory and experiment. Some of the major discrepancies between theory and experiment may be due to the need for inclusion of odd‐order intensity parameters or J mixing in the Judd–Ofelt theory.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
