The EGSnrc/DOSRZnrc Monte Carlo program was used to calculate the absorbed dose to the quartz

the feldspar and the aluminum oxide slice samples irradiated by a 90Sr-90Yβ source.The distributions of the β absorbed dose with depth in the slice samples were evaluated

and the effects of the material and the thickness of the slice samples on the absorbed dose were discussed.Results show that for the quartz

the feldspar or the aluminum oxide slice samples with thickness ranging from 10 to 500μm

the maximum differences of the relative dose can be up to 10%

8% and 16%

respectively.However

for the quartz or the feldspar slice samples with thickness between 100 and 300μm

and for the aluminum oxide slice samples with thickness between 100 and 200μm

the maximum differences of the relative dose are all less than 4%.