Glow discharge detector
Abstract
A highly sensitive electronic ion cell for the measurement of trace elements in He carrier gas which involves glow discharge. A constant wave (CW) glow discharge detector which is controlled through a biased resistor, can detect the change of electron density caused by impurities in the He carrier gas by many orders of magnitude larger than that caused by direct ionization or electron capture. The glow discharge detector utilizes a floating pseudo-electrode to form a probe in or near the plasma. By using this probe, the large variation of electron density due to trace amounts of impurities can be directly measured.
- Inventors:
-
- San Ramon, CA
- Antioch, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 874769
- Patent Number(s):
- 6457347
- Assignee:
- The Regents of the University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- glow; discharge; detector; highly; sensitive; electronic; cell; measurement; trace; elements; carrier; gas; involves; constant; wave; cw; controlled; biased; resistor; detect; change; electron; density; caused; impurities; magnitude; larger; direct; ionization; capture; utilizes; floating; pseudo-electrode; form; probe; near; plasma; variation; due; amounts; directly; measured; carrier gas; glow discharge; electron capture; /73/
Citation Formats
Koo, Jackson C, and Yu, Conrad M. Glow discharge detector. United States: N. p., 2002.
Web.
Koo, Jackson C, & Yu, Conrad M. Glow discharge detector. United States.
Koo, Jackson C, and Yu, Conrad M. Tue .
"Glow discharge detector". United States. https://www.osti.gov/servlets/purl/874769.
@article{osti_874769,
title = {Glow discharge detector},
author = {Koo, Jackson C and Yu, Conrad M},
abstractNote = {A highly sensitive electronic ion cell for the measurement of trace elements in He carrier gas which involves glow discharge. A constant wave (CW) glow discharge detector which is controlled through a biased resistor, can detect the change of electron density caused by impurities in the He carrier gas by many orders of magnitude larger than that caused by direct ionization or electron capture. The glow discharge detector utilizes a floating pseudo-electrode to form a probe in or near the plasma. By using this probe, the large variation of electron density due to trace amounts of impurities can be directly measured.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}
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