OPTICAL BAND GAP AS PARAMETER IN GAMMA-RAYS DOSIMETRY (HIGH DOSES)

Targeting the investigation of the optical band gap energy of two chosen types of optical materials when interacting with ionizing radiation, this paper was focused on a relatively high absorbed gamma-ray doses region (0.1-16) kGy. The optical materials involved in this study were ZF-7 (high lead content glass) and BK-7 (borosilicate crown glass). The potential of the optical band gap energy to be used as parameter in gamma-rays dosimetry (high doses) was also analyzed. Both the direct and indirect types of optical absorption were studied. For the direct transition, relative decreases of 14.4% (ZF-7) and 14.5% (BK-7) were found. In the case of indirect transition, the decrease was of 12.7% for ZF-7 and respectively of 15.4% for BK-7.