The amount of material that will reduce the intensity of the primary beam to one-half its original value is the
A)half-value layer.
B)radioactive half-life.
C)aluminum equivalency.
D)HVL/keV ratio.

Question

Quizplus · Accepted Answer

The half-value layer (HVL) is the amount of material required to reduce the intensity of the primary beam to one-half its original value. The other options are not related to HVL.

The Amount of Material That Will Reduce the Intensity of the Primary