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US 4,789,779 AGranted
Heat pipe oven molecular beam source
AssigneeThe United States of America as represented by the Secretary of Commerce
InventorRobert E. Drullinger
Life of this patent
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Abstract
A recirculating oven molecular beam source of unitary construction compri a shaped porous wicking oven substrate nearly saturated with the working material and having a cavity with source and collimating regions formed therein.
Claims20
A molecular beam machine source comprising:
- a porous wicking oven substrate nearly saturated with a working material and having at least one cavity formed therein, said substrate surrounding said cavity having a source region, a collimating region, and an orifice communicating with the exterior of the substrate;
- and
- means maintaining a temperature gradient along said source and collimating regions for providing evaporated working material molecules in line of sight with said orifice, said collimating region of said substrate collimating evaporated working material molecules to form a molecular beam and recirculating working material condensate to said source region.
A molecular beam source comprising:
- a porous substrate having at least one cavity, a source region, a collimating region, and an opening to the exterior of the substrate;
- working material nearly saturating said substrate such that a thin liquid layer of said working material covers the surface of said source and collimating regions;
- and
- means for maintaining the temperature of said substrate such that working material is evaporated from said source region and evaporated working material is collimated by said collimating region.
1 more element
Dependencies are inferred from the claim text.