https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 Impact of magnetic fields on dose measurement with small ion chambers illustrated in high-resolution response maps https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:35819 Mon 09 Dec 2019 15:43:23 AEDT ]]> Empirical study of the spatial variation of recombination, polarity and polarization effects in ionization chambers https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:42225 3 Farmer-type chamber and the Exradin model A5 100 cm3 spherical chamber. Recombination was found to vary according to the local electric field strength inside the chamber and the volume of air presented to the beam. The bias polarity effect was found to be small and relatively uniform across the chamber. Within the accuracy of the measurements, no difference could be determined between response scans with the electric field vector of the incident beam aligned parallel and orthogonal to the chamber axis.]]> Fri 19 Aug 2022 11:35:28 AEST ]]>