Hot Cathode Neon Discharge Lamps

Rarely:
'Hot cathode neon gas discharge lamp'

http://www.lighting-gallery.net/gallery/displayimage.php?album=229&pos=315&pid=126229


http://www.lamptech.co.uk/Spec%20Sheets/D%20G%20Ne%20GEC%20NE400.htm


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Hot cathode neon arcs:
http://ieeexplore.ieee.org/document/6536807/



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In discussion in the comments section of Cobra's blog:
http://2012portal.blogspot.com/2018/01/blog-post.html

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