On the Possibility to Measure Solar Ultraviolet Emission using the Thermo Luminescence of Specific Crystals
H. Hristov1, V. Velev2, N. Arhangelova3, V. Bozadzhiev4, N. Uzunov5
1Hristo Y. Hristov, Assoc. Prof. Faculty of Natural Sciences, Konstantin Preslavsky University, Shumen, Bulgaria.
2Valentin L. Velev, Assoc. Prof. Faculty of Natural Sciences, Konstantin Preslavsky University, Shumen, Bulgaria.
3 Nina Arhangelova, Assoc. Prof. Faculty of Natural Sciences, Konstantin Preslavsky University, Shumen, Bulgaria.
4Ventsislav Bozadzhiev, Assist. Prof. Faculty of Natural Sciences, Konstantin Preslavsky University, Shumen, Bulgaria.
5N. Uzunov, Laboratori Nazionali di Legnaro, Istituto Nazionale di Fisica Nucleare, Viale dell’Università 2, 35020 Legnaro (PD), Italy.
Manuscript received on 23 March 2015 | Revised Manuscript received on 30 March 2015 | Manuscript published on 30 March 2015 | PP: 25-28 | Volume-4 Issue-1, March 2015 | Retrieval Number: A1339034115©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: A search for crystals capable to produce thermoluminescent glow curves after irradiation with ultraviolet (UV) light has been conducted. It has been found that ruthenium-doped crystal of Bi4Ge3O12 (BGO:Ru) posseses suitable properties such as: long enough fading, good sensitivity towards UV emission, and hence could be a good candidate for direct measurement of the solar UV emission. A portable device for measuring the total and the UV solar light emission has been constructed in order to obtain quantitative values about the total and the partial UV energy absorbed by the crystals. Quantitative values for the principle thermoluminescent glow curves of BGO:Ru have been obtained for diurnal direct solar irradiation. It has been demonstrated that the intensity of the TL glow-curve peaks for exposures made at equal daytime intervals changes according Beer’s law for the attenuation of UV in the Earth’s atmosphere.
Keywords: Thermoluminescence, Solar ultraviolet emission, Actinometer, Glow curve analysis
Scope of the Article: Predictive Analysis