The effect of electron and gamma irradiation on the quality of surface and reflection of silver mirror coated by TiO2 and Ta2O5
In this study, the effects of gamma and electron radiation on reflectivity of silver mirrors coated by TiO2 and Ta2O5, in the wavelength range 250 to 1100 (nm) has been investigated. The coatings are considered for space applications in LEO orbit at 500 (km) from the earth surface for three-year mis...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Isfahan University of Technology
2016-02-01
|
| Series: | Iranian Journal of Physics Research |
| Subjects: | |
| Online Access: | http://ijpr.iut.ac.ir/browse.php?a_code=A-10-1-744&slc_lang=en&sid=1 |
| _version_ | 1818532928377847808 |
|---|---|
| author | E Khalouie I Jabbari B Mirza H Zabolian |
| author_facet | E Khalouie I Jabbari B Mirza H Zabolian |
| author_sort | E Khalouie |
| collection | DOAJ |
| description | In this study, the effects of gamma and electron radiation on reflectivity of silver mirrors coated by TiO2 and Ta2O5, in the wavelength range 250 to 1100 (nm) has been investigated. The coatings are considered for space applications in LEO orbit at 500 (km) from the earth surface for three-year mission in space. Electron and gamma dose absorbed within the three-year are respectively about 7.5 (KGy) and 0.4 (KGy) in this orbit. To measure the resistance of TiO2, gamma radiation with CO60 irradiation source was applied on the sample in the range from 0.2 to 20 (KGy) including dose 400 (Gy) at the desired height. At the highest dose, 20 (KGy), radiation effects on both samples were compared with each other. The atomic force microscopy was used to investigate the effect of radiation on the quality of samples surface after radiation, and an spectrophotometer was used to measure the samples reflection before and after radiation. The results showed that in spite of very minor surface changes, and color change of the mirror substrate, its reflection remains unchanged with TiO2 and Ta2O5 coatings. |
| first_indexed | 2024-12-11T17:51:57Z |
| format | Article |
| id | doaj.art-71715f6013274b9d949f579c23acb57e |
| institution | Directory Open Access Journal |
| issn | 1682-6957 |
| language | English |
| last_indexed | 2024-12-11T17:51:57Z |
| publishDate | 2016-02-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Iranian Journal of Physics Research |
| spelling | doaj.art-71715f6013274b9d949f579c23acb57e2022-12-22T00:56:11ZengIsfahan University of TechnologyIranian Journal of Physics Research1682-69572016-02-01154421427The effect of electron and gamma irradiation on the quality of surface and reflection of silver mirror coated by TiO2 and Ta2O5E Khalouie0I Jabbari1B Mirza2H Zabolian3 Department of Physics, Isfahan University of Technology, Isfahan, Iran Department of Nuclear Engineering, Faculty of Advanced Science and Technologies, University of Isfahan, Isfahan, Iran Department of Physics, Isfahan University of Technology, Isfahan, Iran Department of Physics, Isfahan University of Technology, Isfahan, Iran In this study, the effects of gamma and electron radiation on reflectivity of silver mirrors coated by TiO2 and Ta2O5, in the wavelength range 250 to 1100 (nm) has been investigated. The coatings are considered for space applications in LEO orbit at 500 (km) from the earth surface for three-year mission in space. Electron and gamma dose absorbed within the three-year are respectively about 7.5 (KGy) and 0.4 (KGy) in this orbit. To measure the resistance of TiO2, gamma radiation with CO60 irradiation source was applied on the sample in the range from 0.2 to 20 (KGy) including dose 400 (Gy) at the desired height. At the highest dose, 20 (KGy), radiation effects on both samples were compared with each other. The atomic force microscopy was used to investigate the effect of radiation on the quality of samples surface after radiation, and an spectrophotometer was used to measure the samples reflection before and after radiation. The results showed that in spite of very minor surface changes, and color change of the mirror substrate, its reflection remains unchanged with TiO2 and Ta2O5 coatings.http://ijpr.iut.ac.ir/browse.php?a_code=A-10-1-744&slc_lang=en&sid=1radiation effect electron gamma silver mirrors TiO2 coating Ta2O5 coating |
| spellingShingle | E Khalouie I Jabbari B Mirza H Zabolian The effect of electron and gamma irradiation on the quality of surface and reflection of silver mirror coated by TiO2 and Ta2O5 Iranian Journal of Physics Research radiation effect electron gamma silver mirrors TiO2 coating Ta2O5 coating |
| title | The effect of electron and gamma irradiation on the quality of surface and reflection of silver mirror coated by TiO2 and Ta2O5 |
| title_full | The effect of electron and gamma irradiation on the quality of surface and reflection of silver mirror coated by TiO2 and Ta2O5 |
| title_fullStr | The effect of electron and gamma irradiation on the quality of surface and reflection of silver mirror coated by TiO2 and Ta2O5 |
| title_full_unstemmed | The effect of electron and gamma irradiation on the quality of surface and reflection of silver mirror coated by TiO2 and Ta2O5 |
| title_short | The effect of electron and gamma irradiation on the quality of surface and reflection of silver mirror coated by TiO2 and Ta2O5 |
| title_sort | effect of electron and gamma irradiation on the quality of surface and reflection of silver mirror coated by tio2 and ta2o5 |
| topic | radiation effect electron gamma silver mirrors TiO2 coating Ta2O5 coating |
| url | http://ijpr.iut.ac.ir/browse.php?a_code=A-10-1-744&slc_lang=en&sid=1 |
| work_keys_str_mv | AT ekhalouie theeffectofelectronandgammairradiationonthequalityofsurfaceandreflectionofsilvermirrorcoatedbytio2andta2o5 AT ijabbari theeffectofelectronandgammairradiationonthequalityofsurfaceandreflectionofsilvermirrorcoatedbytio2andta2o5 AT bmirza theeffectofelectronandgammairradiationonthequalityofsurfaceandreflectionofsilvermirrorcoatedbytio2andta2o5 AT hzabolian theeffectofelectronandgammairradiationonthequalityofsurfaceandreflectionofsilvermirrorcoatedbytio2andta2o5 AT ekhalouie effectofelectronandgammairradiationonthequalityofsurfaceandreflectionofsilvermirrorcoatedbytio2andta2o5 AT ijabbari effectofelectronandgammairradiationonthequalityofsurfaceandreflectionofsilvermirrorcoatedbytio2andta2o5 AT bmirza effectofelectronandgammairradiationonthequalityofsurfaceandreflectionofsilvermirrorcoatedbytio2andta2o5 AT hzabolian effectofelectronandgammairradiationonthequalityofsurfaceandreflectionofsilvermirrorcoatedbytio2andta2o5 |