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Title: Nano-patterned superconducting surface for high quantum efficiency cathode

A method for providing a superconducting surface on a laser-driven niobium cathode in order to increase the effective quantum efficiency. The enhanced surface increases the effective quantum efficiency by improving the laser absorption of the surface and enhancing the local electric field. The surface preparation method makes feasible the construction of superconducting radio frequency injectors with niobium as the photocathode. An array of nano-structures are provided on a flat surface of niobium. The nano-structures are dimensionally tailored to interact with a laser of specific wavelength to thereby increase the electron yield of the surface.
Inventors:
;
Issue Date:
OSTI Identifier:
1346020
Assignee:
JEFFERSON SCIENCE ASSOCIATES, LLC TJNAF
Patent Number(s):
9,589,757
Application Number:
14/862,640
Contract Number:
AC05-06OR23177
Resource Relation:
Patent File Date: 2015 Sep 23
Research Org:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Works referenced in this record: