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Safety Tips for Using UV Lamps - Berkeley Lab

Safety Tips for Using UV Lamps Types of UV Lamps Ultraviolet (UV) radiation occupies the portion of electromagnetic spectrum from 100 to 400 nanometers (nm). The UV spectrum consists of three regions: UV-A (315 400 nm) UV-B (280 315 nm) UV-C (100 280 nm) For most people, the main source of UV exposure is the sun. Exposure from the sun is typically limited to the UV-A region, since the earth s atmosphere protects us from the more harmful UV-C and UV-B regions. Only artificial light sources emit radiant energy within the UV-C band. UV generating devices may contain one or a combination of a couple or more artificial light sources (UV Lamps ) in order to achieve the desired light quality. Below are listed some of the most used types of UV generating Lamps . Xenon arc lamp A xenon (Xe) arc lamp is a specialized type of gas-discharge lamp that produces light by passing electricity through ionized xenon gas at high pressure. The lamp generates a bright white light that closely mimics natural sunlight.

sodium iodide. Once the arc tube reaches its running temperature, the sodium dissociates from the iodine, which adds orange and red to the lamp’s spectrum from the sodium D line as the metal ionizes. As a result, metal halide lamps produce an intense white light and have high luminous efficacy at

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