%0 Journal Article %A Pal, Prodipta %A Penhouët, Tiphaine %A D'Anna, Vincenza %A Hagemann, Hans %T Effect of Temperature and Pressure on Emission Lifetime of Sm2+ Ion Doped in MFX (M=Sr, Ba; X=Br, I) Crystals %J Journal of Luminescence %@ 0022-2313 %V 142 %P 66-74 %D 2013 %K Sm2+ %K high pressure lifetime %K temperature lifetime %K SrFBr %K BaFBr %K BaFI %U http://linkinghub.elsevier.com/retrieve/pii/S002223131300135X %R 10.1016/j.jlumin.2013.03.011 %U http://archive-ouverte.unige.ch/unige:27714 %X The emission lifetime of Sm2+ ions doped in MFX (M=Ba, Sr; X=Br, I) crystals was investigated as a function of pressure and temperature. The decay of the 5DJ(J=0,1,2) levels showed single exponential relaxation. The analysis of these experiments yielded the position of the lowest 4f55d1 state as well as non-radiative rate constants. These values were compared with those for Sm2+ doped in other matlockite host crystals. The single exponential decrease of the 5D0,1 lifetime as a function of pressure was described considering the increased radiative decay rates of these 5D0,1 levels through electronic mixing between the 4f55d1 and 5DJstates.