Thermally stimulated luminescence (TSL), electron paramagnetic resonance (EPR) and photo-acoustic spectroscopy (PAS) techniques were used to investigate the radiation induced centers in polycrystalline LaBa₂F₇ containing trace amounts of other rare-earths particularly Gd³⁺and Sm³⁺.The TSL glow curve of LaBa₂F₇ after γ-irradiation to a dose of 3kGy had shown a weak TSL glow peak at 390K and a much stronger one at 495K. The EPR spectra of the J-irradiated LaBa₂F₇ samples showed the presence of O^–and O₂⁻ions. Temperature dependence study of the EPR spectra showed that the thermal destruction of O–ion occurs in the 460–490 K temperature range. In γ-irradiated samples, O^–and F-enters were identified by PAS. The correlation of EPR and PAS results indicate that the prominent TSL glow at 495 K is associated with the thermal destruction of O^–radical ion. The trap parameters viz. trap depth and frequency factor have been determined from TSL data.