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Physics of Plasmas Collection (47 Books)


 
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Physics of Plasmas : Quantum and plasma screening effects on the W...

By: Young-Dae Jung and Daiji Kato

Description: The quantum and plasma screening effects on the Wannier threshold law for the double-electron escape are investigated in strongly coupled semiclassical plasmas. The renormalized electron charge and Wannier exponent are obtained by considering the equation of motion in the Wannier configuration with the screened pseudopotential model as functions of the de Broglie wavelength, Debye length, and charge of the residual ion. It is shown that the renormalized elec...

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Physics of Plasmas : On nonlinear evolution of Alfvénic turbulence...

By: Y. Nariyuki, T. Hada, and K. Tsubouchi

Description: Nonlinear evolution of broadband spectrum Alfvénic turbulence is studied by using one-dimensional hybrid simulations. Numerical solutions indicate that the important characteristics in the solar wind magnetohydrodynamic (MHD) turbulence are naturally reproduced by nonlinear evolution of Alfvénic turbulence with more realistic power spectrum than one used in the past studies. Namely, (i) the modulational instability can dissipate the magnetic energy of Alfvén...

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Physics of Plasmas : An interpolation formula for the ion flux to ...

By: S. A. Khrapak and G. E. Morfill

Description: Ion collisionality is known to be a major factor which determines the magnitude of the surface (floating) potential of an individual particle immersed in a plasma. In this paper a simple interpolation formula for the ion flux collected by such a particle in the entire range of ion collisionality is proposed. The dependency of the floating potential on ion collisionality calculated using this formula as well as using other analytic approximations developed re...

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Physics of Plasmas : Solitary inertial Alfvén waves in dusty plasmas

By: S. Mahmood and H. Saleem

Description: Linear and nonlinear inertial Alfvén waves are studied in the presence of positively and negatively charged dust in electron-ion plasmas. The Sagdeev potential approach is employed to obtain solitary inertial Alfvén waves in such a multicomponent plasma. It is found that electron density dips are formed in the super Alfvénic region, which has behavior similar to the case of electron-ion plasmas. The amplitude of the electron density dip structure is decrease...

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Physics of Plasmas : High intensity, plasma-induced emission from ...

By: Qingliang Liao, Ya Yang, Liansheng Xia, Junjie Qi, Yue Zhang et al

Description: High intensity electron emission cathodes based on a well-aligned ZnO nanorod array were fabricated. An investigation of the properties of the plasma and the electron beams produced by ZnO nanorod array cathodes was presented. Intense current electron beams were obtained from the cathodes. At an electric field of 7–8 V/μm and pulse duration of ∼ 100 ns, the highest emission current density reached 76–91 A/cm2. The production mechanism of the electron beams w...

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Physics of Plasmas : Structure based statistical theory of intermi...

By: Eun-jin Kim and Johan Anderson

Description: A general statistical theory of the intermittency in turbulence based on short-lived coherent structures (instantons) is presented. The probability density functions (PDFs) of the flux R are shown to have an exponential scaling P(R)∝exp(−cRs) in the tails, with the exponent s = (n+1)/m. Here, n and m are the order of the highest nonlinear interaction term and moments for which the PDFs are computed, respectively; c is constant depending on spatial profile of...

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Physics of Plasmas : Effect of a periodic electrostatic potential ...

By: C. A. Ordonez

Description: A classical trajectory Monte Carlo study is reported regarding the motion of a charged particle that is caused to drift across a magnetic field toward an artificially structured boundary, which produces a spatially periodic electrostatic potential. It is found that, for the system studied, the drift toward the boundary is inhibited if the particle’s speed associated with motion parallel to the magnetic field is much larger than the particle’s speed associate...

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