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Magnetoplasmadynamic (MPD) accelerator assisted synthesis of diamond

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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Abstract

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.


Item Type:Article
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.
Record Number:CaltechAUTHORS:BLApsst04
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:BLApsst04
Alternative URL:http://dx.doi.org/10.1088/0963-0252/13/4/022
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1648
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:09 Feb 2006
Last Modified:26 Dec 2012 08:45

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