Define “radioactive decay.”

Radioactive decay refers to the process by which an unstable atomic nucleus loses energy through the emission of radiation. This process occurs naturally as unstable isotopes seek to achieve stability, often resulting in the transformation of the original atom into a different element or a different isotope of the same element. During decay, various forms of radiation can be emitted, including alpha particles, beta particles, and gamma rays, each with distinct properties and implications for radiation safety. Understanding radioactive decay is crucial for radiography professionals, as it relates directly to the behavior of radioactive materials used in industrial applications and informs safety protocols to protect individuals from harmful radiation exposure.

This definition highlights the fundamental concept of radioactive decay, clarifying its significance within the context of radiation safety and radiographic practices.