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Water bag modeling of a multispecies plasma
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We report in the present paper a new modeling method to study multiple species dynamics in magnetized plasmas. Such a method is based on the gyrowater bag modeling, which consists in using a multistep-like distribution function along the velocity direction parallel to the magnetic field. The choice of a water bag representation allows an elegant link between kinetic and fluid descriptions of a plasma. The gyrowater bag model has been recently adapted to the context of strongly magnetized plasmas. We present its extension to the case of multi ion species magnetized plasmas: each ion species being modeled via a multiwater bag distribution function. The water bag modelization will be discussed in details, under the simplification of a cylindrical geometry that is convenient for linear plasma devices. As an illustration, results obtained in the linear framework for ion temperature gradient instabilities are presented, that are shown to agree qualitatively with older works.
Title: Water bag modeling of a multispecies plasma
Description:
We report in the present paper a new modeling method to study multiple species dynamics in magnetized plasmas.
Such a method is based on the gyrowater bag modeling, which consists in using a multistep-like distribution function along the velocity direction parallel to the magnetic field.
The choice of a water bag representation allows an elegant link between kinetic and fluid descriptions of a plasma.
The gyrowater bag model has been recently adapted to the context of strongly magnetized plasmas.
We present its extension to the case of multi ion species magnetized plasmas: each ion species being modeled via a multiwater bag distribution function.
The water bag modelization will be discussed in details, under the simplification of a cylindrical geometry that is convenient for linear plasma devices.
As an illustration, results obtained in the linear framework for ion temperature gradient instabilities are presented, that are shown to agree qualitatively with older works.
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