Effective Atomic Numbers and Electron Densities of Some Human Tissues, Tissue Substitute Substances and Water for Proton, C and O Heavy Charged Particles Interaction in the Energy Range 10 keV – 1GeV

Abstract

Various parameters of dosimetric interest such as effective atomic numbers and electron densities have been used to evaluate the water and tissue equivalence of some human tissues. Such as adipose tissue (ICRU-103), Lung Tissue, ICRP and muscle, skeletal (ICRP-ICRU 201), muscle, striated (ICRP-ICRU-202), Bone compact (ICRU-119), Bone, Cortical (ICRU-120), and six substitute substances, A-150 ICRU-099, LN10-75 LUNG, MS20 (ICRU-200), Muscle Equiv. Liq. with Sucrose (ICRU- 203), Muscle Equiv. Liq. without Sucrose (ICRU-204), and B100 (ICRU-111). These parameters were computed for the total interactions with Proton, C ion and O ion in the wide energy range of 10KeV - 1GeV. The water and tissue equivalent properties have been investigated with respect to Zeff and Ne values to evaluate their ability to be used with heavy charged particles applications. Some conclusions were drawn depending on variation of Zeff throughout the energy range and tissue and water equivalency. Data reported here should be useful in determining best water and the best tissue equivalent substances for proton, C and O ion interaction within the energy range specified.