The possibility of ESR determination of the radiation dose using build
ing materials is studied. Two radiation signals are observed in the br
ick samples superimposed on a non-radiation broad background signal. T
he two radiation signals have the different outputs and change differe
ntly with microwave power variation. The sensitivity of the method is
dependant upon raw material composition. The minimal dose, determined
by this method with the radiation signals in bricks, is equal to 0.6 G
y. Copyright (C) 1996 Elsevier Science Ltd