Computer Science – Sound
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsm51b0526a&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SM51B-0526
Computer Science
Sound
2467 Plasma Temperature And Density, 2494 Instruments And Techniques, 2794 Instruments And Techniques, 7831 Laboratory Studies, 7894 Instruments And Techniques
Scientific paper
A novel technique for removing surface contaminants from a sounding rocket spherical Langmuir probe has been developed in the NRL Space Chamber Laboratory. Contamination layers present on probe surfaces can skew the collected data, resulting in the incorrect determination of plasma parameters. Despite careful cleaning procedures prior to launch, probe surfaces can become coated with layers of adsorbed neutral gas in less than a second when exposed to atmosphere. Our laboratory tests show that by heating the probe from the interior using a small halogen lamp, adsorbed neutral particles can be removed from the probe surface, allowing accurate plasma parameter measurements to be made. We present data indicating the effective times required for decontamination and any subsequent recontamination in the absence of heating under a variety of plasma and neutral gas conditions. *Work supported by ONR.
Amatucci William E.
Cianciosa M. R.
Gatling G.
Schuck Peter W.
Walker Danny N.
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