Irradiation is a technology that enhances the safety of food by reducing or eliminating foodborne illnesses like Salmonella and E. coli. It extends the shelf life of products by destroying or inactivating spoilage-causing organisms. The FDA has evaluated the safety of irradiated food for over 30 years and has found the process to be safe.
You can read more about the process from the FDA here: Food Irradiation: What You Need to Know