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Nondestructive Measurement of Momentum Transfer Collision Frequency for Low Temperature Combustion Plasma
Joint Authors
Letsholathebe, Douglas
Mphale, Kgakgamatso M.
Chimidza, Samuel
Source
International Journal of Antennas and Propagation
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-02-17
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Accurately measured momentum transfer collision frequency and electron density for fire plasma enable correct simulation of electromagnetic wave propagation in the medium.
The simulation is essential for designing high-performance systems suitable for the environment.
Despite this, momentum transfer collision frequency for fire plumes has always been an estimated quantity and/or crudely determined.
There are anecdotal reports of severe line-of-sight (LOS) radio frequency signal degradation on firegrounds.
The problem has implications on safety of fire-fighters during wildfire suppression hence the need of high performance communication systems.
In the experiment, a nonintrusive and direct method for measuring momentum transfer collision frequency in a fire plume was carried out.
Using an automatic network analyser, x -band microwaves were caused to propagate combustion zones of eucalyptus and grass litter fires to measure the flames, scattering parameters.
The parameters were then used to determine average collision frequencies for the plumes.
The average collision frequencies for the eucalyptus and grass fire plumes were measured to be 5.84 × 10 10 and 5.92 × 10 10 rad/s, respectively.
American Psychological Association (APA)
Letsholathebe, Douglas& Mphale, Kgakgamatso M.& Chimidza, Samuel. 2014. Nondestructive Measurement of Momentum Transfer Collision Frequency for Low Temperature Combustion Plasma. International Journal of Antennas and Propagation،Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1036057
Modern Language Association (MLA)
Letsholathebe, Douglas…[et al.]. Nondestructive Measurement of Momentum Transfer Collision Frequency for Low Temperature Combustion Plasma. International Journal of Antennas and Propagation No. 2014 (2014), pp.1-7.
https://search.emarefa.net/detail/BIM-1036057
American Medical Association (AMA)
Letsholathebe, Douglas& Mphale, Kgakgamatso M.& Chimidza, Samuel. Nondestructive Measurement of Momentum Transfer Collision Frequency for Low Temperature Combustion Plasma. International Journal of Antennas and Propagation. 2014. Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1036057
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1036057