AVS 59th Annual International Symposium and Exhibition
    Actinides and Rare Earths Focus Topic Monday Sessions
       Session AC+TF+SS+MI-MoA

Paper AC+TF+SS+MI-MoA7
Investigation of Rare Earth Doped Lithium Tetraborate Glasses with XAFS and Emission and Excitation Spectroscopy

Monday, October 29, 2012, 4:00 pm, Room 006

Session: Actinides and Rare Earths: Thin Films and Surface Science
Presenter: T.D. Kelly, Air Force Institute of Technology
Authors: T.D. Kelly, Air Force Institute of Technology
J.W. McClory, Air Force Institute of Technology
D.A. Buchanan, Air Force Institute of Technology
A.T. Brant, Air Force Institute of Technology
J.C. Petrosky, Air Force Institute of Technology
Ya.B. Losovyj, Louisiana State University
V.T. Adamiv, Institute of Physical Optics
Ya.V. Burak, Institute of Physical Optics
P.A. Dowben, University of Nebraska-Lincoln
Correspondent: Click to Email
The local structure of rare earth doped lithium tetraborate (Li2B4O7) glasses has been studied by extended x ray absorption fine structure (EXAFS) at the rare earth L shells and by optical emission and excitation spectroscopies. The samples investigated were 1% rare earth doped by weight with Gd and Nd. The EXAFS signal was recorded in fluorescence mode with the energies calibrated for Nd L1 and L3 edges and Gd L3 edge. X rays were applied to the samples to activate emission and excitation centers in the glasses. The spectra were analyzed to determine rare earth occupation sites in the lithium tetraborate crystal structure and the emission and excitation lines due to rare earth doping.