Blandino, J. J. and Goodwin, D. G. (2004) Magnetoplasmadynamic (MPD) accelerator assisted synthesis of diamond. Plasma Sources Science and Technology, 13 (4). pp. 712-718. ISSN 0963-0252. http://resolver.caltech.edu/CaltechAUTHORS:BLApsst04
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The use of a magnetoplasmadynamic (MPD) accelerator for diamond synthesis is investigated. The acceleration process in an MPD device is reviewed and results presented for a test in which a low power (15 kW) MPD accelerator was used as the gas activation source for diamond deposition. A hydrogen–argon mixture was used in the discharge with externally injected methane as the carbon precursor. Results, including SEM images, Raman and x-ray diffraction spectra are presented for a 3.3 µm thick film deposited over a 100 min period. The Raman spectra include a broad background and shift in the diamond peak, indicative of contamination and stresses in the deposited film. Potential scaling benefits of the MPD accelerator as well as some of the drawbacks associated with methane injection and sample contamination underscored by the experiments are identified and discussed.
|Additional Information:||© 2004 IOP Publishing Ltd Print publication: Issue 4 (November 2004); Received 7 January 2004; Published 4 November 2004 This work was supported by the National Aeronautics and Space Administration’s Advanced Propulsion Concepts Program. The authors would like to thank Drs Keith Goodfellow and James Polk, as well as Mr Al Owens and Mr Robert Toomath of the Jet Propulsion Laboratory for their assistance with the MPD facility.|
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|Deposited On:||09 Feb 2006|
|Last Modified:||26 Dec 2012 08:45|
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