Initial radiation is radiation emitted during the early stage after a nuclear detonation.

Initial radiation is radiation emitted during the early stage after a nuclear detonation.

• A. Delayed radiation
• B. Prompt radiation
• C. Initial radiation
• D. Secondary radiation

Answer: (C)

Early-stage radiation from a nuclear detonation is the initial radiation, emitted right as the explosion occurs. This timing distinguishes it from delayed radiation, which comes from radioactive decay of fallout later on, and from other terms that don’t refer to the immediate burst. The initial radiation includes the prompt gamma rays and fast neutrons released at detonation, so the description matches this term exactly.

Early-stage radiation from a nuclear detonation is the initial radiation, emitted right as the explosion occurs. This timing distinguishes it from delayed radiation, which comes from radioactive decay of fallout later on, and from other terms that don’t refer to the immediate burst. The initial radiation includes the prompt gamma rays and fast neutrons released at detonation, so the description matches this term exactly.