Visible and Ultra-Violet Radiations Emitted from Helium (He) and Mercury Vapor (Hg) Discharge Lamps Used in Spectrometer

摘要

Helium and Mercury vapor discharge lamps emit light and a portion of ultraviolet radiation(UV) which can affect on human health. The present research aimed to measure Illuminance and UltravioletRadiation Helium (He) and Mercury vapor discharge lamps. Also, determining some important lightingparameters such as the safe parameter of UVA power to illuminance values (K) of Helium (He) and Mercuryvapor discharge lamps which evaluate the relationships between UVA radiation and illumination levels. Theparameters such as ultra violet irradiance quantity, ratio of UVA irradiance to electrical power (η) and the safeparameter of UVA power to luminous flux (K) are calculated and compared for the two types of lamps todedicate their performance. A set up based on UVA/B silicon detector for irradiance measurements in UVAregion. Another set up based on Luxmeter is used for measuring illuminance. The Data were analyzed,performed and calculated to determine the uncertainty model which have all parameters affect on themeasurements and the final results. This study demonstrates that using Helium discharge lamps in physicslaboratories are safer than using Mercury vapor discharge lamps. According to this study, I recommendedusing Helium discharge lamps when it used for physics laboratories when using spectrometer.