The relationship between visible light emission and species fraction of the hydrogen ion beams extracted from 2.45 GHz microwave discharge.
The relationship between Balmer-α and Fulcher-band emissions with extracted H(+), H2(+), and H3(+) ions is demonstrated for a 2.45 GHz microwave discharge. Ion mass spectra and optical measurements of Balmer-α and Fulcher-band emissions have been obtained with a Wien Filter having an optical view-port on the plasma chamber axis. The beam of approximately 1 mA is analyzed for different plasma conditions simultaneously with the measurement of light emissions both with temporal resolution. The use of visible light emissions as a valuable diagnostic tool for monitoring the species fraction of the extracted beams is proposed.
Universidad de Castilla-La Mancha, INEI-Institute for Energy Research, Camilo José Cela s/n, 13170 Ciudad Real, Spain.
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Cortázar
CERN, BE Department, CH1211 Geneva, Switzerland.
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Megía-Macías
Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), 40500 Jyväskylä, Finland.
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Tarvainen
Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), 40500 Jyväskylä, Finland.
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Kalvas
Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), 40500 Jyväskylä, Finland.
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Koivisto