Electron beam apparatus comprising a wire source

Details Electron beam apparatus comprising a wire source Electron beam apparatus comprising a wire source

1984-06-14

1986-05-27

Moore, David K.

Electric lamp and discharge devices

With movable electrode or shield

313149, 313459, H01J 118

Patent

active

045917531

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 two supports are constructed and spaced apart at such a distance (not more than 1 millimeter) 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 wire can be heated to a temperature just below its melting point and is transported across the support under a low tensile stress.

REFERENCES:
patent: 3290540 (1966-12-01), Atti
patent: 3311774 (1967-03-01), Atti
patent: 3364373 (1968-01-01), Atti
patent: 4388560 (1983-06-01), Robinson et al.

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