Title:
ELECTRON BEAM DEVICE WITH WIRE BEAM SOURCE
Document Type and Number:
Japanese Patent JPS6014736
Kind Code:
A
Abstract:
An electron beam apparatus comprises an electron source with an electron emitter in the form of a wire suitably of metal, which slides on two supports. The supports are constructed and spaced apart at such a distance, not more than 1mm, that for the wire portion between the supports a thermal equilibrium is achieved which is optimum for high electron emission from a small area of the wire. The metal wire can be heated to a temperature just below its melting point and is transported via the supports under a low tensile stress.
Inventors:
FURANSHISUKUSU ANTOONIUSU SUTO
Application Number:
JP12937984A
Publication Date:
January 25, 1985
Filing Date:
June 25, 1984
Export Citation:
Assignee:
PHILIPS NV
International Classes:
H01J1/16; H01J37/065; H01J37/06; (IPC1-7): H01J37/06; H01J1/16
Attorney, Agent or Firm:
Akihide Sugimura