The luminescecnee of the Al

2

O

3

type Ba-rich hexaaluminale 1.30BaO·6Al

2

O

3

activated with Ce

3+

Pb

2+

and Sn

2+

is investigated. Emission and excitation spectra show the existence of two different activator centers for all these ions in the Ba-rich compound. For 1.30 BaO·6Al

2

O

3

:Ce

3+

the emission spectrum of Ce

3+

ions is consisted of four bands

the relative intensities of which are independent on the activator concentration

indicating that no energy transfer takes place between two different Ce

3+

centers. For the Pb

2+

- or Sn

2+

-activated compounds

fluorescence spectra contain three bands

390nm

425nm and 485nm for Pb

2+

and 388nm

418nm and 457nm for Sn

2+

lespectively. The bands of 425nm and 390nm (or 418nm and 388nm) are attributed to Pb

2+

(or Sn

2+

) ions

situated in the crystallographic BR and anti-BR sites

lespectively

whereas the bands of 485nm and 457nm are ascribed to pairs of Pb

2+

and Sn

2+

ions

respectively

whereas to their increasing intensities relative to the other two bands with increasing Pb

2+

and Sn

2+

concent. The formation of the ion pair is compared with data reported in the literature for SrAl

12

O

19

:Pb

2+

and is shown to be due to the interaction between the activator ions occupying the BR and anti-BR sites in the same mirror plane. Besides

the luminescence properties of Pb

2+

and Sn

2+

are dhcussed in the light of the energy scheme of Sn

2+

ions.