ABSTRACT
Radiation interacts with matter in a stochastic manner that can be illustrated experimentally, for instance, using a cloud chamber. In practical dosimetry, this stochastic behaviour is overcome by working with dosimetry quantities that represent averages and by using detectors, such as ionisation chambers, which are large enough to ensure that fluctuations in energy deposition are small. These average quantities are well established in classical dosimetry and are utilised in numerous dosimetry protocols.
