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Intensity Parameters of the Spectroscopic Probe [Eu.sup.3+] in ELCB Phosphor.
The symmetry of the crystal site in which [Eu.sup.3+] is located can be determined by the intensity ratio between [sup.5][D.sub.0] [right arrow] [sup.7][F.sub.2] and [sup.5][D.sub.0] [right arrow] [sup.7][F.sub.1] transition emissions in ELCB [64-67].
Moreover, in order to further identify the asymmetry of [Eu.sup.3+] in ELCB phosphor, the intensity parameters are calculated.
where n(= 1.679) and n' (= 1.522) are the refractive indices of ELCB crystal  and fluoride glass 72], respectively.
The calculated [[OMEGA].sub.t] (i = 2 and 4) values of [Eu.sup.3+] in ELCB phosphor are 3.62 x [10.sup.-20] and 1.97 x [10.sup.-20] [cm.sup.2], respectively.
Figure 5 presents the SEM pictures of the as-prepared SLCB and ELCB phosphors.
Tenders invited for Supply and warranty of legrand make elcb c32 30ma single pole 240/415 v 50 hz tripper is no.
Tenders are invited for Installation of elcb at various t/wells in vikaspuri and uttam nagar constituency (re-invited).
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- Elbyzdyko Britaev
- Elbyzdyko Tsopanovich Britaev