Gamma Irradiation Services

Our Gamma Cell, type G.C. 220, can irradiate samples that will fit into a cylindrical chamber approximately 15 cm in diameter and 20 cm in height. The Gamma Cell utilizes an annular Co-60 source permanently enclosed within a lead shield, a cylindrical drawer, and a drive mechanism which moves the drawer up or down along the center line of the source. The current dose rate is calculated based on the half-life of Co-60. The cell has a good spatial distribution of gamma field with practically no variation within the chamber.

The sample should be fit in the cylindrical chamber and in a sealed container that can be made out of almost any material. For sterilization of medical instruments a total dose of 25KGy (2.5 Mrad) is recommended. It takes 2-3 days for the typical irradiation work. The price of irradiation is $130.

For more information please contact Prof. Evans at greg.evans@utoronto.ca