Study of exposure and energy absorption buildup factor for some building materials available in Iraq

Abstract EN

Exposure buildup factor (EBF) and energy absorption buildup factor (EABF) for some building materials (cement, clay brick, thermiston, gypsum and ordinary concrete) available in Iraq at the photon energy range 0.015-15.0 MeV up to penetration depth 40 mfp has been calculated using five parameter geometric progression (G.P) fitting formula.

The variation of EBF and EABF with incident photon energy, penetration depth and equivalent atomic number (Zeq) for the selected building materials has been studied.

Variation in value of EABF was due to dominance of different interaction processes in different energy regions and the chemical composition of studied materials.

Also, the half value layer of chosen building materials has been computed as a function of incident photon energy.

It was observed that concrete has well gamma ray shielding materials than other selected building materials.