Published online by Cambridge University Press: 25 November 2003
Density, molar volume and ionic field strength changes induced by addition
of ThO2 to $\rm 2P_{2}O_{5}\cdot Na_{2}O$ glass matrix are correlated
in order to understand the structural role of thorium oxide in the
investigated glasses and to evidence the structural evolution of the samples
as a function of composition. Gamma activity measurements are used to check
thorium incorporation in the soda-phosphate matrix.