Global to push GA events into
skip to main content

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

Other works cited in this record:

Apparatus for the electrolytic polishing of niobium structures
patent, February 1976

Method for the electrolytic polishing of the inside surface hollow niobium bodies
patent, March 1977

Semiconductor photocathode and semiconductor photocathode apparatus using the same
patent, July 1999

Method of surface preparation of niobium
patent, February 2003

Sintered wire cesium dispenser photocathode
patent, August 2012

Similar records in DOepatents and OSTI.GOV collections: