In this work, the mass attenuation coefficients, half value layer
and effective atomic numbers of Bi2O3 and BaO compared with PbO
in xRmOn: (100 x)B2O3 where x = 30 6 x 6 70 (% by weight) glass
system at 662 keV have been investigated at 662 keV by transmission
experiment, and compared with theoretical ones using WinXCom
software. The results found that the experimental values
agree with the theoretical values. The total mass attenuation coefficients
of glasses were increased with increasing of Bi2O3 and BaO
concentration, due to increasing of photoelectric absorption interaction
of all glass samples. The effect of BaO concentration to total
mass attenuation coefficients of borate glass at this energy is very
small. From the HVL and effective atomic number results show
reflecting that the Bi can replace Pb at this energy. In the case of
Ba, may be can use at appropriate energy such as X-rays or lower.