An X-ray study of neutron irradiated lithium fluoride

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Abstract
The nature of the damage in neutron irradiated lithium fluoride has been examined by x-rays up to neutron doses at which the majority of the ions have been displaced from their lattice sites. The observations have been made by Debye-Scherrer powder photography, Laue photography and small-angle scattering. The results indicate that isolated defects predominate at low doses, but that these cluster to form large defects at doses higher than about 1017 neutrons/cm2. With the exception of some small-angle scattering all the x-ray effects anneal out in the range 400®-500® c. This residual scattering is interpreted as that associated with gas bubbles.

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