Advanced Two Media (ATM) method for measurement of linear attenuation coefficient

Linear attenuation coefficient of irregular targets having unknown thickness (La, Pr, Nd, Gd, Tb, Ho and Er) and regular targets of known thickness (Mo, Ag, Sn, W and Pb) at 59.54 keV have been measured by using a new technique named Advanced Two Media (ATM) method. In this modified Advanced Two Media method pure metallic foils have been used as a mediums 1 and 2. The obtained results from Advanced Two Media method and transmission geometry are in good agreement with theoretical values of WinXCOM.

► Advanced Two Media (ATM) method is given in this communication.
► Linear attenuation coefficient for pure metallic compounds has been measured with regular and irregular shaped targets.
► Concept of thickness for the linear attenuation coefficient measurement has been completely removed.
► Homogeneity of the medium improved by using solid pure metallic foil.
► Error in the measurement has been improved approximately up to 0.17%.