Question

The process by which neutrons lose their kinetic energy through elastic collisions in the soil is known as

• A. Normalization
• B. Cooling
• C. Radiation
• D. Thermalization

Hint:

Remember: “Thermalization” involves energy loss by fast neutrons to reach thermal levels via collisions.

Answer 1

The Correct Option is D

Step 1: "Normalization" and "Radiation" are not real terms for this neutron process.
Step 2: "Cooling" is non-specific and not the technical term used in nuclear physics.
Step 3: Repeated elastic collisions bring fast neutrons to thermal equilibrium with the medium, this is the basis of soil-moisture neutron probes.
Step 4: The correct answer is \[ \boxed{\text{Thermalization}} \]