| This ion
x-ray tube was manufactured by the Kesselring X-ray Tube Co. Chicago,
Il. Gas tubes depended on collisions of positive ions with the cathode
in order to knock off electrons rather than boiling electrons of a surface.
The date of manufacture is probably between 1905 - 1920, and it was
used for diagnostic and theraputic purposes. The anode
is at the bottom, the cathode at the top,
and the anticathode is just above
the anode. The terminal with the long wire that stops near the cathode
(click on this link for a description of this tubes operation). This tube
has two interesting features: there is no solid conductor between
the anti-cathode and the anode, and the automatic regeneration device.
It was designed to operate with a high voltage (100 kv) high frequency
alternating power supply, such as a Tesla or Ruhmkorff
Why three electrodes?
|"Kesselring X-ray Tube Co. Chicago
|Department inventory number D1E.|
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