Drift waves and counter rotating vortices in pair-ion plasmas

Haque, Q.

doi:10.1016/j.physleta.2010.06.013

Cited by 3 publications

(1 citation statement)

References 18 publications

(24 reference statements)

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“…Pair (pi) plasmas consisting of only positive and negative ions, produced in laboratory, have received considerate [1][2][3][4][5][6][7][8][9][10][11] attention for the reason that such plasmas have allowed the investigation of many classic problems of physics by opening a door for the scientists curious to understand the phenomena occurring hundred of light years away in the astrophysical environment, this motivates us to address this an advancement in the "laboratory astrophysics".…”

Section: Introductionmentioning

confidence: 99%

New longitudinal mode and compression of pair ions in plasma

et al. 2016

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Positive and negative ions forming so-called pair plasma differing in sign of their charge but asymmetric in mass and temperature support a new acoustic-ike mode. The condition for the excitation of ion sound wave through electron beam induced Cherenkov instability is also investigated. This beam can generate a perturbation in the pair ion plasmas in the presence of electrons when there is number density, temperature and mass difference in the two species of ions. Basic emphasis is on the focusing of ion sound waves and we show how, in the area of localization of wave energy, the density of pair particles increases while electrons are pushed away from that region.Further, this localization of wave is dependent on the shape of the pulse. Considering the example of pancake and bullet shaped pulses, we find that only the former leads to compression of pair ions in the supersonic regime of the focusing region. Here possible existence of regions where pure pair particles can exist may also be speculated which is not only useful from academic point of view but also to mimic the situation of plasma (electron positron asymmetric and symmetric ) observed in astrophysical environment.

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Section: Introductionmentioning

confidence: 99%

New longitudinal mode and compression of pair ions in plasma

et al. 2016

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Nonlinear structure formation in ion-temperature-gradient driven drift waves in pair-ion plasma with nonthermal electron distribution

et al. 2018

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Nonlinear structure formation in ion-temperature-gradient (ITG) driven waves is investigated in pair-ion plasma comprising ions and nonthermal electrons (kappa, Cairns). By using the transport equations of the Braginskii model, a new set of nonlinear equations are derived. A linear dispersion relation is obtained and discussed analytically as well as numerically. It is shown that the nonthermal population of electrons affects both the linear and nonlinear characteristics of the ITG mode in pair-ion plasma. This work will be useful in tokamaks and stellarators where non-Maxwellian population of electrons may exist due to resonant frequency heating, electron cyclotron heating, runaway electrons, etc.

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