Electronic color centers in SrF2-Na crystals |
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| Authors: | S I Kaschan Z P Chornij |
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| Institution: | (1) L’vovskaya Politekhnica National University, ul. Stepana Bandery 12, L’vov, 79013, Ukraine |
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| Abstract: | It was shown that optical bleaching of M A + color centers at 80 K in SrF2-Na crystals causes the core of an M A + -center to transform into the V a + Me + V a + configuration, in which all three point defects are arranged diagnonally in the cube cell. Reirradiation of an optically bleached crystal by x-rays generates F D centers in it: V a + Me + V a + + e ? → V a 0 Me + V a + ≡ F D. The F D → M A + transformation in SrF2-Na crystals proceeds at T = 135 K, in contrast to the F A → M A + transformations, which take place at T > 200 K. |
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