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Title: Graphene/graphite-based filament for thermal ionization

Methods and systems for thermal ionization of a sample and formation of an ion beam are described. The systems incorporate a thermal ionization filament that is formed of a graphene-based material such as graphite, graphene, graphene oxide, reduced graphene oxide or combinations thereof. The filament material can be doped or chemically modified to control and tune the work function of the filament and improve ionization efficiency of a system incorporating the filament. The systems can be utilized in forming an ion beam for target bombardment or analysis via, e.g., mass spectrometry.
Inventors:
; ;
Issue Date:
OSTI Identifier:
1470735
Assignee:
Savannah River Nuclear Solutions, LLC (Aiken, SC) SRS
Patent Number(s):
10,056,218
Application Number:
15/435,976
Contract Number:
AC09-08SR22470
Resource Relation:
Patent File Date: 2017 Feb 17
Research Org:
Savannah River Site (SRS), Aiken, SC (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

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