Thermionic electron emitter

Details Thermionic electron emitter Thermionic electron emitter

1977-07-07

1979-04-03

Smith, Alfred E.

Electric lamp and discharge devices

Electrode and shield structures

Indirectly heated cathodes

313346DC, H01J 114, H01J 128

Patent

active

041479548

ABSTRACT:
A thermionic electron emitter comprises a tube of wall thickness less than 0.1 mm, a body of thermionic electron emissive material compressed and sintered in the tube, and a ring, coaxial with the tube, within the body to provide constraint against cracking of the body.

REFERENCES:
patent: 889937 (1908-06-01), Little
patent: 998865 (1911-07-01), Tornberg
patent: 2864028 (1958-12-01), Coppola
patent: 3434812 (1969-03-01), Bondley
patent: 3753025 (1973-08-01), Van Stratum et al.

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