Abstract
Direct transmission electron microscopy was used to study both thermal and fission fragment decomposition of silver cyanamide (Ag/sub 2/CN/sub 2/) crystal. It was found to be stable in electron beams of moderate intensity, and the crystals were grown thin enough (about 100 molecules thick) to be observed in transmission. The main products of decomposition at low temperatures are silver, carbon, and gaseous nitrogen. Nucleation at the interface between parent crystal and solid decomposition product was observed only in the special case involving the initiation of holes of crystallographic shape. The decomposition is shown to take place everywhere on the crystal surface; and there is a suggestion that surface steps have some influence on the decomposition. (P.C.H.)
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