Irradiated Pestle


The pestle of this glass mortar and pestle set turned a beautiful purple as a result of an exposure to cobalt-60 (Co-60) gamma rays. The dose was not determined but it was probably on the order of one megarad.

Unfortunately I do not know the identity of the impurity in the glass that is responsible for the purple color.

Lichtenberg Figures               Museum Directory

Last updated: 05/10/11
Copyright 1999, Oak Ridge Associated Universities