Plasma densification method
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United States of America Patent
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Jun 12, 2018
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app pub date -
Mar 27, 2017
filing date -
Mar 28, 2016
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Abstract
The plasma is formed between electrodes to be energized from an electric power source, containing a partially ionized mass having a luminescence region including neutral atoms (NA), primary electrons (PE), secondary electrons (SE), and ions. The method comprises the steps of: accelerating the primary electrons (PE) toward one of said electrodes polarized by a positive high voltage pulse impacting primary electrons (PE) against said electrode and ejecting secondary electrons (SE) from it; subsequently, accelerating the secondary electrons (SE) toward the luminescence region by polarization of said electrode by a negative voltage to collide the secondary electrons with neutral atoms (NA) and producing positive ions (PI) and derived electrons (DE); repeating the previous steps in order to obtain a steady state plasma with a desired degree of ionization.
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