Spectroscopic and video observations of fullerene production arcs
- SRI International, Menlo Park, CA (United States)
Spatially resolved spectroscopic studies of a carbon arc operating under fullerene production conditions have been made across the visible wavelength range using an imaging Optical Multichannel Analyzer. C{sub 2} Swan bands are observed to be the major visible emissions although strong CI and CII as well as He I atomic lines are also observed. Video and photographic studies of the arc characteristics show the Swan-band emissions to be concentrated most intensely near the anode but also to appear strongly in regions well outside the electrode gap region. Vibrational and rotational temperatures of these bands provide information on the temperatures in various regions of the arc. The characteristic spatial structure of the arcs observed in the Swan-band light suggests that they are excited by electrons whose trajectories are controlled by the local electric and magnetic fields. The arc exhibits complex and interesting temporal behavior that has been observed with a video camera using short exposure times. Video film taken through a Swan-band filter clearly shows the dominant spatial features of the C{sub 2} emissions.
- OSTI ID:
- 67855
- Report Number(s):
- CONF-9310400-; ISSN 0003-0503; TRN: 95:000870-0017
- Journal Information:
- Bulletin of the American Physical Society, Vol. 38, Issue 13; Conference: 46. annual gaseous electronics conference, Montreal (Canada), 19-22 Oct 1993; Other Information: PBD: Dec 1993
- Country of Publication:
- United States
- Language:
- English
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