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AssigneeColorado State University Research Foundation
InventorsCasey Farnell, Cody Farnell, John Williams, Desiree Williams, Bao Gia Nguyen, Kathryn Elizabeth Greiner, Ryan Kenneth Ham
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In an example, a method to form a low work function insert includes preparing a mixture that includes a first powder that contains barium, a second powder that contains calcium, a third powder that contains at least one of aluminum, samarium, or magnesium, and a fourth powder that contains a refractory metal. The method may also include heating the mixture, contained in a crucible, in a furnace. Oxygen concentration in the furnace may be maintained at a low partial pressure during heating of the mixture in the furnace. The low work function of the insert allows electrons to be readily extracted from its surface.
A method to form a low work function insert, the method comprising:
A low work function insert, comprising:
An electron source, comprising:
Dependencies are inferred from the claim text.