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ROOM TEMPERATURE DISPENSER PHOTOCATHODE

United States Patent Application

20110140074
A1
View the Complete Application at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
Self-healing photocathode device comprising a photoemissive multi-alkali semiconductor comprising a multi-alkali antimonide having the formula A.sub.xB.sub.y C.sub.zSb, where A, B and C are Group I alkali metals and x+y+z=3; a nanostructured porous membrane, one surface of which is in direct contact with the multi-alkali semiconductor and the opposing surface of which is disposed toward the inside of a sealed reservoir, such that the porous membrane and the sealed reservoir form a volume which is maintained at low pressure; a temperature control means in contact with the porous membrane, wherein the temperature control means regulates the temperature of the porous membrane at 200.degree. C. or less; a source comprising elemental cesium which is releasable into the enclosed volume; and, a current conducting means attached to the source.
Moody, Nathan A. (Los Alamos, NM), Lizon, David Charles (Rio Rancho, NM), Nguyen, Dinh Cong (Los Alamos, NM)
LOS ALAMOS NATIONAL SECURITY, LLC (Los Alamos NM)
12/ 968,991
December 15, 2010
STATEMENT OF FEDERAL RIGHTS [0002] The United States government has rights in this invention pursuant to Contract No. DE-AC52-06NA25396 between the United States Department of Energy and Los Alamos National Security, LLC for the operation of Los Alamos National Laboratory.