Author(s)

Meri Abramishvili, Zaira Akhvlediani, Makvala Galustashvili, Guram Dekanozishvili, Tamaz Kalabegishvili, Vakhtang Kvatchadze, Valery Tavkhelidze

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The thermally stimulated luminescence and IR absorption spectra of MgO:Mn²⁺ crystals irradiated in different reactors have been studied. It has been shown that dependence of TSL peaks (450 and 550 K) and optical absorption bands (3290, 3720 and 1600 cm^-1) on neutron fluence correlate. The trend of these changes in the same fluence range (10¹⁴-10¹⁷ n/cm²) depends both on the initial state of the crystal and on the irradiation source, which may be explained by the “small dose effect”.

Magnesium Oxide, Radiation defects, Thermally Stimulated Luminescence, IR spectra

M. Abramishvili, Z. Akhvlediani, M. Galustashvili, G. Dekanozishvili, T. Kalabegishvili, V. Kvatchadze and V. Tavkhelidze, "Peculiarities of Radiation Effects in MgO:Mn²⁺ Crystals," Journal of Modern Physics, Vol. 2 No. 8, 2011, pp. 841-844. doi: 10.4236/jmp.2011.28099.