DOSIMETRIC GAMMA RADIATION EFFECT ON THE OPTICAL PROPERTIES AND RAMAN SPECTRA OF NOVEL OXYHALIDEPHOSPHATE GLASSES PZLC

摘要

In the present work novel, oxyhalide phosphate glasses with composition 50P2O5 – (45- x)ZnO- 5LiCl- x CuO (where x= 5, 10 and 15 mol%) was prepared. Physical parameters like that the density, ?, the values of molar volume (Vm), oxygen molar volume (VO), oxygen packing density (O. P. d) and optical energy gap (Eopt) were evaluated. The transmission spectra and the energy gap of these glasses studied under irradiated by gamma rays to the dose 20, 40 and 60 Gy. Herein both, ?, and O.p.d values are an increase from 3.0273 to 3.1480 gm?cm-3 and 81.466 to 83.057 respectively, with an increase in CuO from 5 to 15mol%. Otherwise, Eopt, VO, value decrease from 4.17 to 3.42 gm?cm-3 and 12.275 to 12.019 respectively. Effect of gamma radiation on these glasses leads to a variation of the transmission bandwidth and optical energy gap. These changes are related to the formation of Cu ions through photochemical reactions from electrons or holes during the irradiation process. Also, the structure of this glasses studied by using Raman spectra. The optical properties results indicated that the prepared glasses are promising for optical filter applications invisible, NIR and IR region. The results can be indicated that these glasses are promising for using an ultraviolet radiation dosimeter.