Mercury Vapor Lamp Uv Spectrum

Pulsed xenon lamps emit uv light across the entire uv spectrum with a peak emission near 230 nm.

Mercury vapor lamp uv spectrum. Mercury vapor conducts electricity completing the circuit. Our lp hg lamp converts forty percent of the electrical power into uvc radiation for germicidal applications. Unlike most other uv sources the medium pressure lamp mpl has a polychromatic spectral distribution from 190 nm up to the infrared spectrum. Low pressure mercury vapor lamps are a highly efficient source of uv light particularly short wavelength uv light 254nm and 185nm.

125w reptile heat lamp bulb mixjoy high intensity self ballasted mercury vapor light bulb uva uvb full spectrum sun light for reptile and amphibian use 4 2 out of 5 stars 31 21 99 21. Fused silica is used in the manufacturing to keep the 184 nm light from being absorbed. Ultraviolet light emitting diode uv c led lamps emit uv light at selectable wavelengths between 255 and 280 nm. When the mixture is energized excited it creates a glowing plasma of electrons that pass through the mercury vapor.

These lamps are usually low pressure mercury vapor lamps. The dominant emission 90 from these lamps is uv c energy. Mercury based lamps operating at low vapor pressure emit uv light at the 253 7 nm line. These types of lamps are available in ozone producing and ozone free quartz with a variety of phosphors.

High pressure mercury lamps installed at most fluorescence microscopes are not suitable because they do not emit the short wavelengths needed for this lithography. Current is limited from the power source to protect the lamp and supply wiring. The blue green tint of mercury vapor lamps is caused by the strong violet and green lines. Line spectrum of mercury vapor.

As the arc temperature rises mercury in the lamp converts to a gaseous vapor state. The usual means of generating uv c for disinfection is most typically with a mercury vapor lamp that produces light through use of an electric arc through vaporized mercury. Often called germicidal or ozone absorption lamps they are very stable light sources. Uv spectrum in medium pressure mercury lamps a plasma that emits uv light is generated by applying electrical voltage.

It is important to use a lamp that emits uvc also termed far uv deep uv or vacuum ultraviolet vuv. Lamp output in the uv range depends on the amount of mercury and vapor pressure of mercury in the lamp. The distribution of energy over the wavelength ranges is depicted on the left.