Which contamination measurement is used for both Beta Gamma and Alpha particles in assessing contaminated areas?

The appropriate measurement for assessing contamination in areas contaminated by both Beta-Gamma and Alpha particles is expressed as dpm/100 cm². This unit, "disintegrations per minute per 100 square centimeters," is a common metric used in radiation protection to quantify the level of radioactive contamination on surfaces.

Using dpm/100 cm² allows for a standardized way to measure how many disintegrations are occurring due to the radioactive sources on a specific area, which is essential for evaluating the extent of contamination and the potential risks to personnel. It provides a clear representation of surface contamination levels, facilitating appropriate response actions to ensure safety.

Other units, such as rads/hr, measure radiation dose rates and are not specifically indicative of contamination on a surface. The unit dpm/cm² could also be utilized, but it wouldn't account for an area standardization like the per 100 cm² measure does. Similarly, mSv/hr represents a dose rate due to exposure to radiation, not directly reflecting surface contamination. Thus, dpm/100 cm² is the preferred choice for accurately assessing contamination levels for various types of particles.