Electronmicroscopic Observation of the Additively Coloured KCl Crystal

Abstract

The KCl single crystal which was grown from the melt, thermally quenched, and additively coloured with potassium metal were observed electronmicroscopically using replica technique. Growth of crystallites was seen both on the outer surfaces and in the interior of the crystal when it was thermally quenched or it was coloured additively. The crystallites grew more markedly in the latter case than in the former. The mechanism by which F centres are formed were considered.