10.3 - Bragg-Gray cavity theory

This video contains a broad description of how the Bragg-Gray cavity theory is used to convert ionisation chamber measurements to dose to water. It describes the use of stopping power ratios to convert dose in one medium to dose in another, and how dose to a point in the medium is obtained from a dose measured in a detector volume.

It also describes the theory behind the conditions under which the theory is applicable, including:

Why the chamber volume must be small compared with the range of electrons in the surrounding medium.
Why photons shouldn't interact in the chamber volume.
Why the energy of electrons crossing the chamber volume shouldn't change inside the chamber volume.

Видео 10.3 - Bragg-Gray cavity theory канала ROscribbles