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Title: Versatile radar measurement of the electron loss rate in air

We present an experimental method that makes possible in-situ measurements of the electron loss rate in arbitrary gas mixtures. A weakly ionized plasma is induced via resonant multiphoton ionization of trace amounts of nitric oxide seeded into the gas, and homodyne microwave scattering detection is used to study the dynamics of the electron loss mechanisms. Using this approach, the attachment rate for electrons to molecular oxygen in room temperature, atmospheric pressure air is determined. The measured 0.76 × 10{sup 8} s{sup −1} attachment rate is in very good agreement with predictions based on literature data.
Authors:
; ;  [1]
  1. Mechanical and Aerospace Engineering Department, Princeton University, Princeton, New Jersey 08544 (United States)
Publication Date:
OSTI Identifier:
22217838
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 22; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AIR; ATMOSPHERIC PRESSURE; DETECTION; ELECTRON LOSS; ELECTRONS; MICROWAVE RADIATION; MICROWAVE SPECTRA; MIXTURES; MULTI-PHOTON PROCESSES; NITRIC OXIDE; OXYGEN; PHOTOIONIZATION; PLASMA DIAGNOSTICS; RADAR; SCATTERING; TEMPERATURE RANGE 0273-0400 K; TRACE AMOUNTS