Search - Number 14 - RADIATION-INDUCED PROCESSES IN NATURAL BIOTITES

RADIATION-INDUCED PROCESSES IN NATURAL BIOTITES
Cover not present RADIATION-INDUCED PROCESSES IN NATURAL BIOTITES
Category: Number 14
Publication: 14
Summary

The changes of structure and phase composition of regular and hydrated biotite at radiation exposure of electron bombardment and ?-quanta were investigated by the methods of infrared spectroscopy and crys-tal-optic analysis.Аs a result radiation the processes of oxidation of iron become more intensive and consecu-tive positional disorder of a crystal lattice of biotite with the growth of a dose of irradiation was established. After regular biotite is irradiated to the maximum dose ~ 108 Gy, it keeps the crystal structure, while hy-drated biotite undergoes phase transition with formation poorly crystalline a clay phase (vermiculite). These processes are accompanied the change of basic optical constants of mineral and type of his IR-spectra.
Keywords: biotite, electron irradiation, ?-irradiation, IR-spectroscopy, crystal-optic analysis, crystal-line structure, disorder.