Laser stimulated cathode

Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube

Reexamination Certificate

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C313S491000

Reexamination Certificate

active

07816853

ABSTRACT:
A cathode has an emission layer that thermionically emits electrons upon exposure with a laser beam. The material of the emission layer has a product of density (ρ), measured inkgm3,heat capacity (Cp), measured inJkg⁢⁢Kand heat conductivity (λ), measured inWmKthat is, at room temperature, maximally 500,000J2m4⁢K2⁢s.Such a cathode has an improved thermionic emission of electrons.

REFERENCES:
patent: 4606061 (1986-08-01), Ramamurti
patent: 6054801 (2000-04-01), Hunt et al.
patent: 2007/0064872 (2007-03-01), Freudenberger et al.
patent: 2007/0187712 (2007-08-01), Yamada et al.
patent: 2007/0274454 (2007-11-01), Freudenberger et al.
patent: WO 9943870 (1999-09-01), None

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