Spectral, Radiation-Optical And Shielding Properties Of Phosphate Glasses With High Lead Content

Spectral, radiation optical, and radiation shielding properties of new phosphate glasses, TPF, with high lead content (up to 40 mol % PbO) were studied. They are characterised by the heightened radiation optical resistance at exposure doses up to 5*107 R, and by the improved radiation shielding properties as compared with similar data of silicate glasses with the same lead content. A TPF boundary of semi-transmission for a 1cm thick layer lies approximately at 355nm, its absorption coefficient, m, for y-quanta of 137Cs (0.663 MeV) and 60 Co (1.25 MeV) reach 0.373 and 2.40 cm-1 whereas m's of the Russian radiation resistant strong flint TF110 (40% mol % PbO) are equal to 0.355 and 2.14cm-1.