Computer Science
Scientific paper
Sep 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2266..527m&link_type=abstract
Proc. SPIE Vol. 2266, p. 527-535, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research, Jinxu
Computer Science
Scientific paper
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.
Boyes Anna-Lisa M.
Cai Mingxiang
Hsiech Chunming
Montaser Akbar
Zhang Hao
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