Electron-diffraction studies of radiation effects in CO2 crystals

Ratiation effects in CO2 crystals exposed to 80 keV electrons are studied by using the electron diffraction technique. The measurements made in the temperature interval from 6 to 85 K reveal the nature of structural defects which are found to be mainly of orientational type. It is shown that for maximum doses (about 1019 electron/cm2) and T = 6 K, the orientational ordering coefficient for molecules in the crystal decreases by more than 20%. According to the results of measurements, an intense relaxation of defects takes place at temperatures below 0.3T melt of the crystal.

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