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Title: Aerosol ionizer

A system and method comprising an ion production chamber having an ultra-violet light source disposed towards said chamber, a coated quartz plate between the chamber and the UV source whose coating absorbs incident UV light and ejects electrons into the chamber through the photoelectric effect, a harvest gas disposed to flow through the chamber from an inlet to an outlet, and a jet operable to introduce a sample into the harvest gas flow. In some embodiments the system includes using helium as the harvest gas. Certain embodiments include introducing a sample perpendicular to the harvest gas flow and using multiple sample introduction jets to increase mixing efficiency. In some embodiments the harvest gas and particle sample jet are one and the same. The charge sample may be coupled to a MEMS-based electrometer.
Inventors:
;
Issue Date:
OSTI Identifier:
1483289
Assignee:
Brechtel Manufacturing (Hayward, CA) CHO
Patent Number(s):
10,078,068
Application Number:
15/672,131
Contract Number:
SC0015069
Resource Relation:
Patent File Date: 2017 Aug 08
Research Org:
Brechtel Manufacturing, Hayward, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 36 MATERIALS SCIENCE