In Gamma Decay a Nucleus in an Excited State Decays

question 73

Multiple Choice

In gamma decay a nucleus in an excited state decays to a lower energy state by the emission of a high-energy photon called a gamma ray. Which of the following statements is true?

• A) Gamma decay is always slow greater than a ns).
• B) Gamma decay is always fast less than a ns).
• C) Gamma decay is usually fast but can in special cases be slow.
• D) Gamma decay is always accompanied by the emission of a neutrino.
• E) Gamma decay is always accompanied by the emission of a β particle.