Nonlocal collisionless power absorption using effective viscosity model in inductively coupled plasma discharges

Rehman, Aman‐ur; Lee, J. K.

doi:10.1063/1.3179808

Cited by 2 publications

(1 citation statement)

References 21 publications

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“…10,11 This model has been used recently to calculate the nonlocal collisionless power absorption in ICP discharges. 12 Theoretical and experimental results have shown that a proper application of weak external magnetic field to ICP discharges can improve many discharge parameters. However, the application of external magnetic field changes the electrodynamics of the plasma.…”

Section: Introductionmentioning

confidence: 99%

Effective viscosity model for electron heating in warm magnetized inductively coupled plasma discharges

Rehman

Lee

2009

Physics of Plasmas

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Articles you may be interested inModeling of inductively coupled plasma SF6/O2/Ar plasma discharge: Effect of O2 on the plasma kinetic properties J. Vac. Sci. Technol. A 32, 021303 (2014); 10.1116/1.4853675 Transition of electron kinetics in weakly magnetized inductively coupled plasmas Phys. Plasmas 20, 101612 (2013); 10.1063/1.4826949 Modeling of inductively coupled plasma Ar/Cl2/N2 plasma discharge: Effect of N2 on the plasma properties J. Vac. Sci. Technol. A 31, 011301 (2013); 10.1116/1.4766681 Nonlocal collisionless power absorption using effective viscosity model in inductively coupled plasma discharges Phys. Plasmas 16, 073505 (2009);An effective viscosity model for warm magnetized inductively coupled plasma ͑MICP͒ discharges has been derived. It calculates the power absorbed inside MICP discharges that takes nonlocal behavior into account with the help of effective viscosity terms in the momentum equations for right-handed and left-handed components of the wave. The validity of this model for warm MICP discharges has been checked by comparing it with self-consistent kinetic model for warm MICP discharges. This effective viscosity model shows nonmonotonic decay for right-and left-handed components of the electric field inside MICP discharges. It also shows regions of negative power absorption which cannot be shown using conventional fluid models. The power absorbed per unit area ͑for right-and left-handed components͒ calculated using effective viscosity model is similar to that calculated using computationally extensive kinetic models over a wide range of MICP discharge conditions.

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Section: Introductionmentioning

confidence: 99%

Effective viscosity model for electron heating in warm magnetized inductively coupled plasma discharges

Rehman

Lee

2009

Physics of Plasmas

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Effect of collisions on Weibel instability with anisotropic electron distributions

2017

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Using kinetic approach, the effect of electron–ion collisions on Weibel instability has been investigated for three different types of anisotropic distribution functions (i.e., bi-kappa, bi-Maxellian, and product bi-kappa). It is found that the presence of electron–ion collisions has a negative effect on the growth rate of Weibel instability. By using analytical analysis, it has been found that the growth rate of the collisional plasma becomes negative if the electron–ion collision frequency becomes higher than the growth rate of the Weibel instability for a collisionless plasma while keeping all the other parameters same. The impact of electron–ion collisions has also been studied on the temperature anisotropy parameter τ(=T⊥/T||) threshold required for making the growth rate of the Weibel instability positive for all the three distribution functions. The illustrations show that for higher spectral index κ||=κ>4, the temperature anisotropy threshold is same for all the three distribution functions; however, for lower κ||=κ<4, the threshold conditions are different for the bi-kappa as compared to those found for the other two distribution functions. The boundaries between the stable and unstable regions of bi-kappa and product bi-kappa distributions have been found in the presence of collisions. In the presence of collisions, the boundary curve for product bi-kappa is similar to that we get in the absence of collisions. However, the temperature anisotropy threshold parameters are higher for collisional plasma as compared to those obtained for the collisionless plasma. The boundary curve for bi-kappa distribution function in the presence of collisions is significantly different from the boundary curve formed in the absence of collisions. In the presence of collisions, the temperature anisotropy threshold increases very rapidly when the spectral index is <2.

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Nonlocal collisionless power absorption using effective viscosity model in inductively coupled plasma discharges

Cited by 2 publications

References 21 publications

Effective viscosity model for electron heating in warm magnetized inductively coupled plasma discharges

Effective viscosity model for electron heating in warm magnetized inductively coupled plasma discharges

Effect of collisions on Weibel instability with anisotropic electron distributions

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