Types of Irradiation
Gamma (?) rays
- energy comes from decay of radioactive isotopes (Cobalt-60 and Cesium-137); short half life=25 years
- isotope is contained and stored in pool of water (radiation shield) and raised when product is exposed to ?-rays
- facility is concrete chamber with 6’ thick walls
- disrupts the DNA of microorganisms or contaminants
- completely penetrates product and packaging (pallets)
- process 200 million lbs/year
- estimate of $0.01/lb