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Prof. Hassan Nafie :: Publications: |
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| Title: | Coloring of Topaz after Irradiation |
| Authors: | S Salama, AI Helal, MAM Gomaa, LI Abou-Salem, H Nafie, EA Badawi |
| Year: | 2017 |
| Keywords: | Not Available |
| Journal: | Tenth Radiation Physics & Protection Conference |
| Volume: | Not Available |
| Issue: | Not Available |
| Pages: | Not Available |
| Publisher: | Not Available |
| Local/International: | International |
| Paper Link: | Not Available |
| Full paper | Not Available |
| Supplementary materials | Not Available |
| Abstract: |
Raw topaz stone samples are subjected to irradiation by neutrons from the Egyptian research reactor and by γ rays from a gamma source. Changes in the color of the stones are observed which can be attributed to the formation of defects in the structure of the stones. The defects can absorb certain wave length which is observed as a change in the stone color. The absorption of light is investigated by an optical spectrophotometer technique at different irradiation and heating conditions. Raman studies of topaz stones ... |
