Interaction between a Langmuir wave and a ballistic perturbation
The theoretical solutions of the Landau–Vlasov initial value problem giving mode‐mode coupling usually neglect the free‐streaming contribution. The problem is solved theoretically including the ballistic terms. A mode, resulting from the interaction between the ballistic perturbation of the frequenc...
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| Veröffentlicht in: | Phys. Fluids; (United States) 1980-10, Vol.23 (10), p.2034-2044 |
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| container_title | Phys. Fluids; (United States) |
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| creator | Gervais, F. Olivain, J. Quéméneur, A. Trocheris, M. |
| description | The theoretical solutions of the Landau–Vlasov initial value problem giving mode‐mode coupling usually neglect the free‐streaming contribution. The problem is solved theoretically including the ballistic terms. A mode, resulting from the interaction between the ballistic perturbation of the frequency ω′ associated with a launched wave and the Landau component of frequency ω′′ of a second launched wave, appears only if ω′′≳ω′. Its frequency is ω=ω′′−ω′ and its phase velocity is identical to that of the Landau mode ω/k=ω′′/k′′. The amplitude of this mode is calculated as a function of distance from the launching probe and this is compared with the amplitude measured experimentally in a plasma column. |
| doi_str_mv | 10.1063/1.862890 |
| format | Article |
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The problem is solved theoretically including the ballistic terms. A mode, resulting from the interaction between the ballistic perturbation of the frequency ω′ associated with a launched wave and the Landau component of frequency ω′′ of a second launched wave, appears only if ω′′≳ω′. Its frequency is ω=ω′′−ω′ and its phase velocity is identical to that of the Landau mode ω/k=ω′′/k′′. 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Fluids; (United States)</title><description>The theoretical solutions of the Landau–Vlasov initial value problem giving mode‐mode coupling usually neglect the free‐streaming contribution. The problem is solved theoretically including the ballistic terms. A mode, resulting from the interaction between the ballistic perturbation of the frequency ω′ associated with a launched wave and the Landau component of frequency ω′′ of a second launched wave, appears only if ω′′≳ω′. Its frequency is ω=ω′′−ω′ and its phase velocity is identical to that of the Landau mode ω/k=ω′′/k′′. 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Fluids; (United States)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gervais, F.</au><au>Olivain, J.</au><au>Quéméneur, A.</au><au>Trocheris, M.</au><aucorp>Association EURATOM-CEA sur la Fusion, Departement de Physique du Plasma et de la Fusion Controlee, Centre d'Etudes Nucleaires, 92260 Fontenay-aux-Roses, France</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Interaction between a Langmuir wave and a ballistic perturbation</atitle><jtitle>Phys. Fluids; (United States)</jtitle><date>1980-10</date><risdate>1980</risdate><volume>23</volume><issue>10</issue><spage>2034</spage><epage>2044</epage><pages>2034-2044</pages><issn>0031-9171</issn><eissn>2163-4998</eissn><coden>PFLDAS</coden><abstract>The theoretical solutions of the Landau–Vlasov initial value problem giving mode‐mode coupling usually neglect the free‐streaming contribution. The problem is solved theoretically including the ballistic terms. A mode, resulting from the interaction between the ballistic perturbation of the frequency ω′ associated with a launched wave and the Landau component of frequency ω′′ of a second launched wave, appears only if ω′′≳ω′. Its frequency is ω=ω′′−ω′ and its phase velocity is identical to that of the Landau mode ω/k=ω′′/k′′. The amplitude of this mode is calculated as a function of distance from the launching probe and this is compared with the amplitude measured experimentally in a plasma column.</abstract><cop>United States</cop><doi>10.1063/1.862890</doi><tpages>11</tpages></addata></record> |
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| source | Alma/SFX Local Collection |
| subjects | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY 700108 - Fusion Energy- Plasma Research- Wave Phenomena ANALYTICAL SOLUTION BOLTZMANN-VLASOV EQUATION COLLISIONLESS PLASMA CONFIGURATION CORRELATION FUNCTIONS CYLINDRICAL CONFIGURATION DIFFERENTIAL EQUATIONS DISTRIBUTION FUNCTIONS DISTURBANCES EQUATIONS FOURIER ANALYSIS FUNCTIONS INTEGRAL TRANSFORMATIONS INTERACTIONS LAPLACE TRANSFORMATION MAGNETIC FIELDS NONLINEAR PROBLEMS NORMAL-MODE ANALYSIS PLASMA PLASMA WAVES PROBES TRANSFORMATIONS |
| title | Interaction between a Langmuir wave and a ballistic perturbation |
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