Study on negative ion production by electronegative gases in a helicon source

A helicon plasma source (HeliPS) experimental set-up is developed to perform experiments in electronegative gases. Characterization of HeliPS is done in argon and oxygen discharge by varying the working pressure, magnetic field strength as well as radio frequency power at 13.56 MHz thereby identifyi...

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Published in:Japanese Journal of Applied Physics 2020-05, Vol.59 (SH), p.SHHC01
Main Authors: Chakraborty, Monojit, Sharma, Narayan, Neog, Nirod Kumar, Bandyopadhyay, Mainak
Format: Article
Language:English
Subjects:
Argon
Electron affinity
Electronegative gases
Electronegativity
Field strength
Negative ions
Parameter identification
Plasma
Plasmas
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container_issue SH
container_start_page SHHC01
container_title Japanese Journal of Applied Physics
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creator Chakraborty, Monojit
Sharma, Narayan
Neog, Nirod Kumar
Bandyopadhyay, Mainak
description A helicon plasma source (HeliPS) experimental set-up is developed to perform experiments in electronegative gases. Characterization of HeliPS is done in argon and oxygen discharge by varying the working pressure, magnetic field strength as well as radio frequency power at 13.56 MHz thereby identifying the optimum parameters for its operation. After characterization, experiments have been performed in electronegative gases such as oxygen and hydrogen to understand the effect of electron affinity in producing negative ions in such plasmas. To enhance the negative ion production, both magnetic filter and magnetic cage, used innovatively in such a system, shows interesting results on their influence in electronegative plasma production.
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subjects Argon
Electron affinity
Electronegative gases
Electronegativity
Field strength
Negative ions
Parameter identification
Plasma
Plasmas
title Study on negative ion production by electronegative gases in a helicon source
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