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Proceedings Paper

Spectroscopic imaging of atmospheric-pressure helium inductively coupled plasma (ICP) discharges
Author(s): Akbar Montaser; Anna-Lisa M. Boyes; Mingxiang Cai; Chunming Hsiech; Hao Zhang
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Paper Abstract

Spatially resolved information from atmospheric-pressure helium inductively coupled plasmas (He ICP) was acquired with a simple, inexpensive optical imaging spectrometer. The system uses a 35-cm focal length Czerny-Turner monochromator/spectrograph and a solid state charge-injection device (CID) or a charge coupled device (CCD). Quantitative image maps of the plasmas were produced with good resolution. For example, when the CID was used, the entire plasma image could be monitored with a spatial resolution of 0.13 and 0.10 mm in the horizontal and vertical directions. The spectral resolution was 4 nm. Lateral distributions of emission intensities were converted, using an Abel inversion routine, to radial distributions. Some unique features of the He ICP, compared to the commonly used Ar ICP, were identified at or around analytical conditions for elemental analysis of gaseous and aqueous samples.

Paper Details

Date Published: 30 September 1994
PDF: 9 pages
Proc. SPIE 2266, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research, (30 September 1994); doi: 10.1117/12.187590
Show Author Affiliations
Akbar Montaser, George Washington Univ. (United States)
Anna-Lisa M. Boyes, George Washington Univ. (United States)
Mingxiang Cai, George Washington Univ. (United States)
Chunming Hsiech, George Washington Univ. (United States)
Hao Zhang, George Washington Univ. (United States)

Published in SPIE Proceedings Vol. 2266:
Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research
Jinxue Wang; Paul B. Hays, Editor(s)

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