NDLI: Current neutralization and plasma polarization for intense ion beams propagating through magnetized background plasmas in a two-dimensional slab approximation

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Current neutralization and plasma polarization for intense ion beams propagating through magnetized background plasmas in a two-dimensional slab approximation

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Frontiers of Physics : Volume 9, Issue 1, February 2014

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Current neutralization and plasma polarization for intense ion beams propagating through magnetized background plasmas in a two-dimensional slab approximation

Content Provider	Springer Nature Link
Author	Hu, Zhang Hu Chen, Mao Du Wang, You Nian
Copyright Year	2014
Abstract	A two-dimensional electromagnetic Particle-in-Cell (PIC) simulation model is proposed to study the propagation of intense ion beams with beam width w $_{b}$ small compared to the electron skin depth c/ω $_{pe}$ through background plasmas in the presence of external applied magnetic fields. The effective electron gyroradius w $_{ge}$ is found to be an important parameter for ion beam transport in the presence of magnetic fields. In the beam regions, the background plasmas respond differently to the ion beam of width w $_{b}$ < w $_{ge}$ and w $_{b}$ > w $_{ge}$ for the given magnetic field and beam energy. For the case of beam width w $_{b}$ < w $_{ge}$ with relative weak external magnetic fields, the rotation effects of plasma electrons are found to be significant and contributes to the significant enhancement of the self-electric and self-magnetic fields. While for the case of beam width w $_{b}$ > w $_{ge}$ with relative strong external magnetic fields, the rotation effects of plasma electrons are strongly inhibited and a well neutralization of ion beam current can be found. Finally, the influences of different beam widths, beam energies and magnetic fields on the neutralization of ion beam current are summarized for the cases of w $_{b}$ < w $_{ge}$ < c/ω $_{pe}$, w $_{ge}$ < w $_{b}$ < c/ω $_{pe}$ and w $_{b}$ < c/ω $_{pe}$ < w $_{ge}$.
Starting Page	226
Ending Page	233
Page Count	8
File Format	PDF
ISSN	20950462
Journal	Frontiers of Physics
Volume Number	9
Issue Number	2
e-ISSN	20950470
Language	English
Publisher	Higher Education Press
Publisher Date	2013-12-26
Publisher Institution	Chinese Universities
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	current neutralization ion beams magnetized plasmas Particle-in-Cell simulations Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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