Capillary - Discharge Based Hand-Held Detector For Chemical Vapor Monitoring

Patent · Tue May 31 00:00:00 EDT 2005

OSTI ID:879964

Duan, Yixiang ^[1]

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1. White Rock, NM

A handheld/portable detector for chemical vapor monitoring includes a housing and a discharge chamber that is established therein. The plasma discharge has a relatively small volume, e.g., in the micro-liter range. A first electrode and a second electrode are disposed within the discharge chamber and a discharge gap is established therebetween. A sample gas tube is in fluid communication with the discharge chamber and provides a sample gas to the discharge chamber. Also, a plasma gas tube is in fluid communication with the discharge chamber and provides a plasma gas thereto. Accordingly, the plasma gas can be used to maintain microplasma discharge between the electrodes and the sample gas can be introduced into the microplasma discharge. A spectrometer optically connected to the handheld/portable detector is used to measure the radiation emitted by the sample gas when subjected to the microplasma discharge.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• Assignee: The Regents of the Universtiy of California (Oakland, CA)
• Patent Number(s): US 6900734
• Application Number: 10/386916
• OSTI ID: 879964
• Country of Publication: United States
• Language: English