Haas, F. A.; Al-Kuzee, J. and Braithwaite, N. St. J.
|DOI (Digital Object Identifier) Link:||http://dx.doi.org/10.1063/1.2131196|
|Google Scholar:||Look up in Google Scholar|
A microwave measurement of electron density in low-pressure plasmas can be based on a hairpin probe. The hairpin forms a transmission line that supports a quarter-wavelength standing wave. The resonance is related to the relative permittivity of the surroundings, and hence, in a plasma, electron density can be evaluated. For improved fidelity, a general model is developed to include the effects of positive and negative space-charge sheaths formed around the hairpin wires. The former tends to lower the resonance, whereas the latter tends to raise it initially. This is qualitatively in agreement with experiments in dc argon plasmas.
|Item Type:||Journal Article|
|Copyright Holders:||2005 American Institute of Physics|
|Keywords:||plasma diagnostics; probes; low temperature plasmas|
|Academic Unit/Department:||Science > Physical Sciences|
|Interdisciplinary Research Centre:||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
|Depositing User:||Tracey Moore|
|Date Deposited:||13 Jun 2006|
|Last Modified:||23 May 2014 09:20|
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