How do you calculate the ground dose rate if the aerial dose rate is 6 cGyph and the air-ground correlation factor is 4 cGyph?

To find the ground dose rate based on the given aerial dose rate and the air-ground correlation factor, you use the relationship defined by the air-ground correlation factor. This factor indicates how much the aerial dose rate is amplified or reduced when translating it to a ground dose rate.

In this instance, the aerial dose rate is 6 cGyph and the air-ground correlation factor is 4 cGyph. The calculation involves multiplying the aerial dose rate by this correlation factor:

Ground dose rate = Aerial dose rate × Air-ground correlation factor

Ground dose rate = 6 cGyph × 4 cGyph = 24 cGyph

This demonstrates how the aerial dose can be elevated significantly due to the environmental conditions when it reaches the ground. The correct answer of 24 cGyph accurately reflects this calculation, representing the expected intensity of radiation that would be measured on the ground level based on the conditions provided.