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Title: Graphene/graphite-based filament for thermal ionization

Abstract

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:
Research Org.:
Savannah River Site (SRS), Aiken, SC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1470735
Patent Number(s):
10056218
Application Number:
15/435,976
Assignee:
Savannah River Nuclear Solutions, LLC (Aiken, SC)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
DOE Contract Number:  
AC09-08SR22470
Resource Type:
Patent
Resource Relation:
Patent File Date: 2017 Feb 17
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Hewitt, Joshua T., Hall, Gregory, and Schick, Jr., Charles R.. Graphene/graphite-based filament for thermal ionization. United States: N. p., 2018. Web.
Hewitt, Joshua T., Hall, Gregory, & Schick, Jr., Charles R.. Graphene/graphite-based filament for thermal ionization. United States.
Hewitt, Joshua T., Hall, Gregory, and Schick, Jr., Charles R.. Tue . "Graphene/graphite-based filament for thermal ionization". United States. https://www.osti.gov/servlets/purl/1470735.
@article{osti_1470735,
title = {Graphene/graphite-based filament for thermal ionization},
author = {Hewitt, Joshua T. and Hall, Gregory and Schick, Jr., Charles R.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {8}
}

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