Stable F2+ centers formation in the irradiated LiF crystals under the combined action of UV light and mechanical load

The combined action of UV-light and continuously increased mechanical stress on LiF single crystals preirradiated in the reactor prolongs the life-time of F2+ centers unstable at room temperature. With the deformation rate increase the concentration of stabilized F2+ centers rises. Generation of the induced emission in the samples under study was observed.