Radiation Protection Dosimetry Vol. 110 Nos. 1-4 © Oxford University Press 2004; all rights reserved
W values of protons in alkane-based TE gases and dimethylether in the energy range 1100 keV: measurements and additivity models
Physikalisch-Technische Bundesanstalt, Bundesallee 100, D-38116 Braunschweig, Germany
* Corresponding author: baek{at}ptb.de
W values of tissue-equivalent gases based on propane and butane were measured for protons in the energy range 1100 keV and compared with those of dimethylether and water vapour. The experimental values of the tissue-equivalent gas mixtures were compared with data calculated from the W values of the mixture components using five existing additivity models and two new models derived within the scope of the present work. Apart from one modelthe simplest oneall models show a good agreement with the experimental data.