X-ray-induced conductivity in iron-doped lithium niobate crystals
نویسندگان
چکیده
Illumination of photorefractive, iron-doped lithium niobate crystals (LiNbO3 :Fe) with x-rays generates a conductivity that we determine from the speed of hologram erasure. The doping levels of the crystals and the acceleration voltage of our x-ray tube are varied. A theoretical model is presented, which describes the obtained results. A decrease of the conductivity with increasing Fe concentration can be explained by assuming that holes are the dominant charge carriers for this short-wavelength illumination.
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