| Pressler 'Globe' Spectrum Tubes | |
| Written by AnubisTTP on 2008-06-03 |
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Devices included in this entry:
Argon spectrum tube (glass capillary vessel)
Krypton spectrum tube (glass capillary vessel, pictured in thumbnail)
Here is an example of a set of spectrum tubes with unusually shaped envelopes. These tubes have right angle electrodes like the "H" shaped tube above, but add the extra attachment of a globe shaped discharge chamber at one end of the capillary vessel. This construction style allows the tube to serve double duty as both a capillary emitter and a point spectral source.
Pressler krypton filled 'globe' style spectrum tube.
The path of electron flow must make a 180 degree turn as it exits the orifice in the center of the globe.
Argon filled version of this tube. Unfortunately, this sample has outgassed.
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