The effect of moving dislocations upon the optical properties of the precipitates formed by Eu2+ ions in single crystals was studied. Reconfiguration of the precipitated phase, caused by interaction with dislocations during plastic flow, was detected by using a luminescence technique. It was shown that gliding dislocations transformed precipitates, initially formed by aggregation, into new centers of luminescence. Plate-like 2-dimensional precipitates were destroyed by dislocations, and became small clusters. Three-dimensional precipitates were transformed into previously unknown luminescent centers.

New Luminescent Bands Induced by Plastic Deformation of NaCl:Eu Phosphors. Y.A.Ossipyan, R.B.Morgunov, A.A.Baskakov, S.Z.Shmurak, Y.Tanimoto: Physica Status Solidi A, 2004, 201[1], 148-56