What is the thickness of an L-bench used for handling a 137Cs source?

The thickness of an L-bench used for handling a 137Cs source is specified to be 5 cm. This measurement is crucial for ensuring adequate shielding of radiation emitted by the cesium-137 source, which primarily emits beta particles and gamma rays.

The design of the L-bench, particularly its thickness, is key in minimizing radiation exposure to personnel involved in handling or working near the radioactive source. With 137Cs having significant gamma radiation that can penetrate materials, a thickness of about 5 cm effectively balances the need for sufficient shielding while allowing for practical use in handling and manipulation.

Choosing a thickness that is too thin may not offer adequate protection, thus increasing the risk of radiation exposure, while an excessively thick bench may be unnecessary and cumbersome, potentially complicating tasks involving the source. Hence, a 5 cm thickness is established as a standard measure, ensuring safety without compromising efficiency in procedures involving the use of cesium-137.