The feature of defects formation in crystallohydtates by x-ray and Uv-light

The objects of research are the crystals Li₂SO₄middotH₂O and Na₂SO₄middot10H₂O. In monohydrates Li₂SO₄middotH₂O after an irradiation by X-ray in a temperature range 80-300 K thermoluminescence (TL) peaks are observe with maxima at 100 K and 130 K. The similar picture is observed for Na₂SO₄middot10H₂O with maxima at 100 K and 140 K. The peak at 100 K is dominant in both crystallohydrates. The TL peak at 100 K disappears after complete dehydration of this crystals. The exit of luminescence from waterless samples is increased more than on three order. At an irradiation of by UV-light two TL peaks are observes with practically identical lightsum. For dehydrated samples after UV-irradiation lightsum does not collect. Thus photolysis or radiolysis of water molecules results in formation of the defects in anionic subsystem and suppression of recombination luminescence. For understanding of the observable phenomena the quantum-chemical modeling was carried out. It is established, that the hydrogen atom can be captured by defects SO₃ ^-, SO₄ ^- and O^-. As result they are <<switched off>> from recombination processes. On the other hand at interaction of the hydrogen atom with anion SO₄ ^2- can occurs unactivation disintegration with formation SO₃ ^- and OH^-. The given processes allow to explain observable processes in crystallohydrate of the alkaline metals sulphate at an irradiation by X-ray and UV-light. Besides the phenomenon of the loss weight at crystals Na₂SO₄middot10H₂O after irradiation is revealed. Probably it is connected to local heating by hot electrons. The given phenomenon can be used for measurement of the large radiation dozes.