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Emission spectrum of mercury lamps versus pressure The three lamp spectra featured above show the impact of pressure on the light emission spectrum of mercury arc lamps. Extremely high mercury pressures not only enable extremely high arc brightnesses, it also results in a much improved light color relative to that of standard (HP) high-pressure mercury lamps. Keywords: Miscellaneous

Emission spectrum of mercury lamps versus pressure


The three lamp spectra featured above show the impact of pressure on the light emission spectrum of mercury arc lamps. Extremely high mercury pressures not only enable extremely high arc brightnesses, it also results in a much improved light color relative to that of standard (HP) high-pressure mercury lamps.
Philips_HPI-T_400_Bare.jpg Sylvania_MS40021PS21BU.jpg SDW-T_100W_extreme.jpg Mercury_pressure.jpg Sun.jpg
Lamp
Lamp Type:Mercury discharge and arc
File information
Filename:Mercury_pressure.jpg
Album name:Max / Spectra
Keywords:Miscellaneous
Filesize:291 KiB
Date added:24 Aug 2024
Dimensions:1500 x 1531 pixels
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Software:Adobe Photoshop CS5 Windows
URL:https://trad-lighting.net/gallery/displayimage.php?pid=368
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Comment 1 to 4 of 4
Page: 1

Sammi   [Sat 24 Aug 2024 at 13:13]
Interesting information, thank you for sharing. Cool Mercury Vapour Lamp
Max   [Sun 25 Aug 2024 at 08:36]
No problem Sammi!
Tuopeek   [Wed 11 Sep 2024 at 16:44]
Nice Pressure spectral line broadening demo. Zeeman splitting next for the set. Smile Was this from the same lamp controlling run up?
Max   [Wed 11 Sep 2024 at 17:16]
I could have obtained all three spectra using a single UHP lamp, run at different power levels, but here those spectra were measured using three different lamps. Actually I should add the low-pressure spectrum of a TUV lamp on top, but the 1-nm resolution of the measurements won't show much difference with the HP case (6.5 bar), except for the relative heights of the spectral lines.

As for the Zeeman effect, I'd need a rather large magnet and a much better spectrometer to resolve the effect of the magnetic field on Mercury's lines... I'm afraid I won't be showing that anytime soon Wink Years ago, I saw quite an impressive demo of the Zeeman splitting on Zinc's red line, this was done with a Philips spectral lamp and a Fabry-Perot interferometer.

Comment 1 to 4 of 4
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