A Cavity Theory for Solid State Detectors Using in Dosimetry

A cavity theory based on a modification of Burlin cavity theory is proposed. It treats primary and scatter photon spectra separately and calculates the absorbed dose of medium. The cavity theory was applied to calculate an output factor in water phantom with a 6 MV photon beam linear accelerator. The results for the calculations using new cavity theory are compared with the results for measurements using diode detector. They are in good agreement within 0.5%。