Ir. Martin et al., Energy transfer with migration. Generalization of the Yokota-Tanimoto model for any kind of multipole interaction, J CHEM PHYS, 111(3), 1999, pp. 1191-1194
The dynamics of luminescence decay is analyzed within the general scenario
of randomly distributed ions with whatever multipole interaction, taking in
to account energy transfer and migration processes among them. By applying
Pade approximants to the Allinger and Blumen expression for the excited sta
te population, a simple expression has been obtained which can be easily fi
tted to experimental data. This expression can be considered a generalizati
on of the dipole-dipole Yokota-Tanimoto equation. On the other hand, the de
cay curves from the D-5(3) level of the Tb3+ ions in fluorozincate glasses
have been measured for different Tb3+ concentrations. The results are analy
zed in the framework of the proposed expression. (C) 1999 American Institut
e of Physics. [S0021-9606(99)70927-X].