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We measured electron temperature and density by an electrostatic probe, and dissociation degree, number density of electronically excited states, and rot-vibrational temperatures of 2.45 GHz-microwave discharge hydrogen plasma at several torr in a cylindrical discharge quartz tube by spectroscopic observation. The electron temperature and density are found to be 3.0 - 4.5 eV and 7.0 times 1010 - 3...
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