Absorbed dose is defined as what?

Absorbed dose is defined as what?

• A. The energy released by radiation into space.
• B. The rate at which radiation passes through a material.
• C. The distance over which radiation travels in air.
• D. The measurement of radiation transferred to a material by radiation, measured in RADs.

Answer: (D)

Absorbed dose measures how much energy from radiation is deposited in a material per unit mass. In other words, it’s the energy actually absorbed divided by the mass of the material. That’s why the description that says it’s the energy transferred to a material by radiation, measured in rad, matches the concept. It isn’t about energy leaving into space, the rate at which radiation passes through (that’s a flux or exposure-rate idea), or the distance radiation travels (range). Modern units use gray (Gy), with 1 rad equal to 0.01 Gy.

Absorbed dose measures how much energy from radiation is deposited in a material per unit mass. In other words, it’s the energy actually absorbed divided by the mass of the material. That’s why the description that says it’s the energy transferred to a material by radiation, measured in rad, matches the concept. It isn’t about energy leaving into space, the rate at which radiation passes through (that’s a flux or exposure-rate idea), or the distance radiation travels (range). Modern units use gray (Gy), with 1 rad equal to 0.01 Gy.