Current drive in recombining plasma

Schmit, P. F.; Fisch, N. J.
October 2011
Physics of Plasmas;Oct2011, Vol. 18 Issue 10, p102102
Academic Journal
The Langevin equations describing the average collisional dynamics of suprathermal particles in nonstationary plasma remarkably admit an exact analytical solution in the case of recombining plasma. The current density produced by arbitrary particle fluxes is derived including the influence of charge recombination. Since recombination has the effect of lowering the charge density of the plasma, thus reducing the charged particle collisional frequencies, the evolution of the current density can be modified substantially compared to plasma with fixed charge density. The current drive efficiency is derived and optimized for discrete and continuous pulses of current, leading to the discovery of a nonzero 'residual' current density that persists indefinitely under certain conditions, a feature not present in stationary plasmas.


Related Articles

  • Super Heavy Nuclei over Critical Fields and their Conections. Greiner, Walter; Zagrebaev, Valery // AIP Conference Proceedings;2007, Vol. 905 Issue 1, p70 

    Low energy collisions of very heavy nuclei (238U+238U, 232Th+250Cf and 238U+248Cm) have been studied within the realistic dynamical model based on multi-dimensional Langevin equations. Large charge and mass transfer was found due to the “inverse quasi-fission” process leading to...

  • Escape of a driven particle from a metastable state: A semiclassical approach. Ghosh, Pradipta; Shit, Anindita; Chattopadhyay, Sudip; Chaudhuri, Jyotipratim Ray // Journal of Chemical Physics;6/28/2010, Vol. 132 Issue 24, p244506 

    In this article we explore the dynamics of escape of a particle in the semiclassical regime by driving the particle externally. We demonstrate that under suitable approximations the semiclassical escape rate essentially assumes the structure of classical Kramers rate. Both internal (due to...

  • On Superheavy Element Formation and Beyond. Zagrebaev, Valery; Greiner, Walter // AIP Conference Proceedings;2007, Vol. 884 Issue 1, p85 

    Low energy collisions of very heavy nuclei (238U+238U, 232Th+250Cf and 238U+248Cm) have been studied within the realistic dynamical model based on multi-dimensional Langevin equations. Large charge and mass transfer was found due to the “inverse quasi-fission” process leading to...

  • Stochastic heating in single and dual frequency capacitive discharges. Kawamura, E.; Lieberman, M. A.; Lichtenberg, A. J. // Physics of Plasmas;May2006, Vol. 13 Issue 5, p052117 

    Two electron heating mechanisms in capacitive discharges are ohmic heating due to electron-neutral collisions and stochastic heating at the plasma edge due to momentum transfer from high voltage moving sheaths. In this work, the stochastic heating and its dependence on various parameters are...

  • Neutral particle effects on the spin-dependent electron scattering in dense plasmas. Gyeong Won Lee; Young-Dae Jung // Physics of Plasmas;2014, Vol. 21 Issue 9, p1 

    The influence of neutral particle collisions on the spin-channel preference for spin-asymmetry scattering is investigated in dense plasmas. The effective electron-electron interaction potential taking into account the electron-neutral collision effects is employed to obtain the scattering cross...

  • The effects of plasma density and magnetic field on ion temperature and drift velocity in a LaB6 direct current plasma. Hyun-Jong Woo; Kyu-Sun Chung; Myoung-Jae Lee; Taihyeop Lho // Physics of Plasmas;Feb2009, Vol. 16 Issue 2, pN.PAG 

    In a LaB6 direct current plasma, parallel and perpendicular ion temperatures (Ti∥ and Ti⊥) were measured as a function of plasma density and magnetic field by a laser-induced fluorescence technique. In order to study the impacts of magnetic field and plasma density on ion temperature...

  • Relativistic and Quantum Revisions of the Multisource Thermal Model in High-Energy Collisions. Fu-Hu Liu; Cai-Xing Tian; Mai-Ying Duan; Bao-Chun Li // Advances in High Energy Physics;2012, p1 

    The multisource thermal model is revised for relativistic and quantum situations. It is shown that the quantum effect can be neglected due to a very small result. The distributions of particle momenta, momentum components, transverse momenta, kinetic energies, and velocities in both the...

  • A Study of Transverse Momentum Distributions of Jets Produced in p-p, p-p-, d-Au, Au-Au, and Pb-Pb Collisions at High Energies. Wei, Hua-Rong; Liu, Fu-Hu // Advances in High Energy Physics;5/19/2015, Vol. 2015, p1 

    The transverse momentum distributions of jets produced in p-p, p-p-, d-Au, Au-Au, and Pb-Pb collisions at high energies with different selected conditions are analyzed by using a multisource thermal model. The multicomponent (mostly two-component) Erlang distribution used in our description is...

  • Simulation of the electron runaway in a plasma by Langevin equation. Zhidkov, A.G. // Physics of Plasmas;Feb2001, Vol. 5 Issue 2, p385 

    Presents a Langevin equation for the particle-in-cell simulation of a collisional plasma. Effect of electron runaway in a uniform electric field; Calculation on the number of runaway electrons produced per unit collisions; Exploration of the non-Maxwellian effect.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics