Low Pressure Mercury Vapour Lamp

Again transition of the electrons requires least amount of input energy from a colliding electron.

Low pressure mercury vapour lamp.

Lamp output in the uv range depends on the amount of mercury and vapor pressure of mercury in the lamp. As pressure increases the chance of multiple collisions gets increased. It is not currently accepting answers. Viewed 18 times 0 begingroup closed.

In case of fluorescent lamp the mercury vapour pressure is maintained at lower level such that 60 of the total input energy gets converted into 253 7 nm single line. Mercury vapor conducts electricity completing the circuit. The blue green tint of mercury vapor lamps is caused by the strong violet and green lines. Low pressure lp amalgam low pressure lp and medium pressure mp lamps are all mercury based lamps.

Closed ask question asked 5 days ago. Low pressure mercury vapor lamps do they always produce both 184 5nm and 253 7nm. This question is off topic. Low pressure mercury vapor lamps are a highly efficient source of uv light particularly short wavelength uv light 254nm and 185nm.

Explanation of low pressure mercury lamp. Amalgam lamps use a mercury amalgam mix to control mercury vapor pressure. Active 5 days ago. The first mercury vapor lamps were in a lower pressure tube.

What s the difference between low pressure lp amalgam low pressure lp and medium pressure mp uv lamps. Low pressure mercury vapour lamp hg 2 lamp heraeus has developed a compact low pressure low voltage mercury vapour lamp type hg2 principally for use in scientific instrumentation. Rather than a cold spot the lamp s amalgam spot on pellet regulates mercury vapor pressure during operation and yields up to three times the uvc output of a standard low pressure mercury lamp of the same length. In low pressure mercury vapor lamps only the lines at 184 nm and 254 nm are present.

This lamp has a highly stable output predominantly at the 253 7 nm mercury line. Fluorescent and germicidal lamps are included in this. A mercury vapor lamp whose partial pressure during operation does not exceed 0 001 atmosphere. Find out information about low pressure mercury lamp.

These types of lamps are available in ozone producing and ozone free quartz with a variety of phosphors. In medium pressure mercury vapor lamps the lines from 200 600 nm are present. Often called germicidal or ozone absorption lamps they are very stable light sources.