What is the order of types of nuclear radiation from lowest to highest in terms of energy?

Biology · High School · Tue Nov 03 2020

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The order of types of nuclear radiation from lowest to highest in terms of energy is:

  1. Alpha radiation
  2. Beta radiation
  3. Gamma radiation

Explanation:

  1. Alpha radiation: Alpha particles consist of two protons and two neutrons (essentially a helium nucleus) and have the least penetrating power among the three types of radiation. They possess relatively low energy and are relatively heavy, making them less penetrating but more damaging if they interact with living tissue. However, their ability to travel through materials is limited, and they can be stopped by a piece of paper or a few centimeters of air.
  2. Beta radiation: Beta particles are high-energy, high-speed electrons (β-) or positrons (β+) emitted from the nucleus during radioactive decay. Beta particles have higher penetration power compared to alpha particles but are still less penetrating than gamma radiation. They can be stopped by materials like aluminum or a few millimeters of plastic.
  3. Gamma radiation: Gamma rays are high-energy electromagnetic waves (similar to X-rays but more energetic) emitted during nuclear decay or radioactive decay processes. They are highly penetrating and require dense materials, such as lead or several centimeters of concrete, to effectively shield against them.

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