The choice of cathode material in a hot cathode ionization gauge

✍ Scribed by PE Gear

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 784 KB
• Volume: 26
• Category: Article
• ISSN: 0042-207X
• DOI: 10.1016/s0042-207x(76)80412-5

✦ Synopsis

The paper outlines the problems encountered in using a hot cathode ionization gauge with particular reference to the tungsten cathode.

The theory of thermionic emission from metals and semiconductors is mentioned as is activation and poisoning of surfaces. Low temperature cathodes are discussed with emphasis on the monolayer cathodes, oxide cathodes and the refractory compound cathodes.