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Laboratory demonstration model: Active cleaning technique deviceThe technique which utilizes exposure to a plasma to remove contaminants from a surface was incorporated into a laboratory model which demonstrates active cleaning by both plasma cleaning and ion sputtering modes of operation. The development phase is reported and includes discussion of the plasma tube configuration, device design, and performance tests. A general description of the active cleaning device is provided which includes information on the main power/plasma discharge sensors, and the power, gas supply, and ion accelerator systems. Development of the active cleaning species at high vacuum conditions is described and results indicate that plasma cleaning occurs in the region of a visible plume which extends from the end of the plasma tube. Recommendations are made for research to determine the plasma cleaning mechanism and the plasma species responsible for the cleaning, as well limitations on the type of contaminants that can be removed.
Document ID
19740020518
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Shannon, R. L. (Boeing Aerospace Co. Seattle, WA, United States)
Gillette, R. B. (Boeing Aerospace Co. Seattle, WA, United States)
Date Acquired
September 3, 2013
Publication Date
March 1, 1974
Subject Category
Biotechnology
Report/Patent Number
NASA-CR-120292
D180-18031-1
Accession Number
74N28631
Funding Number(s)
CONTRACT_GRANT: NAS8-28270
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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