Relativistic Effects on Large Amplitude Nonlinear Langmuir Waves in a Two-fluid Plasma
Author : Yasunori Nejoh
Publisher :
Page : 19 pages
File Size : 34,85 MB
Release : 1994
Category :
ISBN :
Author : Yasunori Nejoh
Publisher :
Page : 19 pages
File Size : 34,85 MB
Release : 1994
Category :
ISBN :
Author : B.K Shivamoggi
Publisher : Springer Science & Business Media
Page : 213 pages
File Size : 44,94 MB
Release : 2012-12-06
Category : Science
ISBN : 940092772X
A variety of nonlinear effects occur in a plasma. First, there are the wave steepening effects which can occur in any fluid in which the propagation speed depends upon the wave-amplitude. In a dispersive medium this can lead to classes of nonlinear waves which may have stationary solutions like solitons and shocks. Because the plasma also acts like an inherently nonlinear dielectric resonant interactions among waves lead to exchange of energy among them. Further, an electromagnetic wave interacting with a plasma may parametrically excite other waves in the plasma. A large-amplitude Langmuir wave undergoes a modulational instability which arises through local depressions in plasma density and the corresponding increases in the energy density of the wave electric field. Whereas a field collapse occurs in two and three dimensions, in a one-dimensional case, spatially localized stationary field structures called Langmuir solitons can result. Many other plasma waves like upper-hybrid waves, lower-hybrid waves etc. can also undergo a modulational instability and produce localized field structures. A new type of nonlinear effect comes into play when an electromagnetic wave propagating through a plasma is strong enough to drive the electrons to relativistic speeds. This leads to a propagation of an electromagnetic wave in a normally overdense plasma, and the coupling of the electromagnetic wave to a Langmuir wave in the plasma. The relativistic mass variation of the electrons moving in an intense electromagnetic wave can also lead to a modulational instability of the latter.
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Page : 652 pages
File Size : 49,27 MB
Release : 1995
Category : Aeronautics
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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author : Yasunori Nejoh
Publisher :
Page : 28 pages
File Size : 14,57 MB
Release : 1994
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Page : 88 pages
File Size : 10,12 MB
Release : 1980
Category : Controlled fusion
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Page : 586 pages
File Size : 17,63 MB
Release : 1994
Category : Power resources
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Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
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Page : 740 pages
File Size : 37,11 MB
Release : 1996
Category : Science
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Page : 700 pages
File Size : 31,8 MB
Release : 1975
Category : Nuclear energy
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Page : 1170 pages
File Size : 22,68 MB
Release : 1994
Category : Physics
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Author : United States. Energy Research and Development Administration
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Page : 994 pages
File Size : 29,62 MB
Release : 1977
Category : Medicine
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