Nonlinear dynamics of filamentation instability and current filament merging in a high density current-driven plasma
| العنوان: | Nonlinear dynamics of filamentation instability and current filament merging in a high density current-driven plasma |
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| المؤلفون: | S. M. Khorashadizadeh, Ali Reza Niknam, M. R. Taghadosi |
| المصدر: | Radiation Effects and Defects in Solids. 170:945-955 |
| بيانات النشر: | Informa UK Limited, 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | Physics, Nuclear and High Energy Physics, Radiation, Condensed matter physics, Plasma, Condensed Matter Physics, 01 natural sciences, Instability, 010305 fluids & plasmas, Magnetic field, Nonlinear system, Filamentation, Quantum electrodynamics, 0103 physical sciences, General Materials Science, 010306 general physics, Saturation (magnetic), Quantum, Current density |
| الوصف: | The magnetic field generation due to the filamentation instability (FI) of a high density current-driven plasma is studied through a new nonlinear diffusion equation. This equation is obtained on the basis of quantum hydrodynamic model and numerically solved by applying the Crank–Nicolson method. The spatiotemporal evolution of the magnetic field and the electron density distribution exhibits the current filament merging as a nonlinear phase of the FI which is responsible for the strong magnetic fields in the current-driven plasmas. It is found that the general behaviour of the FI is the same as that of the classical case but the instability growth rate, its magnitude, and the saturation time are affected by the quantum effects. It is eventually concluded that the quantum effects can play a stabilizing role in such situation. |
| تدمد: | 1029-4953 1042-0150 |
| DOI: | 10.1080/10420150.2015.1118690 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::f0b15d87bbecee0d35708b153d1f8623 https://doi.org/10.1080/10420150.2015.1118690 |
| رقم الانضمام: | edsair.doi...........f0b15d87bbecee0d35708b153d1f8623 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10294953 10420150 |
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| DOI: | 10.1080/10420150.2015.1118690 |