Coexistence of parametric decay cascades and caviton collapse at subcritical densities
Results are reported on two-dimensional numerical solutions of Zakharov's model for strong Langmuir turbulence excited by powerful EM pump waves at subcritical densities, as in HF modification of the ionosphere and laser- plasma interactions. The results show that truncated parametric decay cas...
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| Veröffentlicht in: | Physical review letters 1991-04, Vol.66 (15), p.1970-1973 |
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| container_end_page | 1973 |
|---|---|
| container_issue | 15 |
| container_start_page | 1970 |
| container_title | Physical review letters |
| container_volume | 66 |
| creator | DUBOIS, D. F ROSE, H. A RUSSELL, D |
| description | Results are reported on two-dimensional numerical solutions of Zakharov's model for strong Langmuir turbulence excited by powerful EM pump waves at subcritical densities, as in HF modification of the ionosphere and laser- plasma interactions. The results show that truncated parametric decay cascades can coexist with caviton collapse for moderate pump power. A high level of ion density fluctuations, driven primarily by caviton collapse, produces energy and power spectra which are not consistent with conventional weak turbulence theory. (Author) |
| doi_str_mv | 10.1103/PhysRevLett.66.1970 |
| format | Article |
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F</creatorcontrib><creatorcontrib>ROSE, H. A</creatorcontrib><creatorcontrib>RUSSELL, D</creatorcontrib><title>Coexistence of parametric decay cascades and caviton collapse at subcritical densities</title><title>Physical review letters</title><addtitle>Phys Rev Lett</addtitle><description>Results are reported on two-dimensional numerical solutions of Zakharov's model for strong Langmuir turbulence excited by powerful EM pump waves at subcritical densities, as in HF modification of the ionosphere and laser- plasma interactions. The results show that truncated parametric decay cascades can coexist with caviton collapse for moderate pump power. A high level of ion density fluctuations, driven primarily by caviton collapse, produces energy and power spectra which are not consistent with conventional weak turbulence theory. (Author)</description><subject>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</subject><subject>CORRELATIONS</subject><subject>DATA</subject><subject>EARTH ATMOSPHERE</subject><subject>ELECTROMAGNETIC RADIATION</subject><subject>Exact sciences and technology</subject><subject>FLUCTUATIONS</subject><subject>INFORMATION</subject><subject>INTERACTIONS</subject><subject>ION DENSITY</subject><subject>IONOSPHERE</subject><subject>LASER RADIATION</subject><subject>LASER-PRODUCED PLASMA</subject><subject>NONLINEAR PROBLEMS</subject><subject>NUMERICAL DATA</subject><subject>NUMERICAL SOLUTION</subject><subject>Physics</subject><subject>Physics of gases, plasmas and electric discharges</subject><subject>Physics of plasmas and electric discharges</subject><subject>PLANETARY IONOSPHERES</subject><subject>PLASMA</subject><subject>PLASMA WAVES</subject><subject>RADIATIONS</subject><subject>THEORETICAL DATA</subject><subject>TURBULENCE</subject><subject>TWO-DIMENSIONAL CALCULATIONS</subject><subject>VARIATIONS 640201 -- Atmospheric Physics-- Auroral, Ionospheric, & Magetospheric Phenomena</subject><subject>WAVE PROPAGATION</subject><subject>Waves, oscillations, and instabilities in plasmas and intense beams</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><recordid>eNp90VGLEzEQB_Agitc7_QSCLILiS2tm0ySbRyl6CgVF1NcwOzvLRba7dSc97Lc3pQXvyadJ4DcJM3-lXoBeAWjz7uvdUb7x_ZZzXjm3guD1I7UA7cPSA6wfq4XWBpZBa3-lrkV-aa2hds1TdQVar42xfqF-bib-kyTzSFxNfbXHGXec50RVx4THilAIO5YKx65c7lOexoqmYcC9cIW5kkNLc8qJcCgto5QjyzP1pMdB-Pml3qgfHz9833xabr_cft683y7JBMhL23oMrXY9UWM49B32tqlrs-6wrcG4UgKYLjiCgFAjYPB1maIl7Fs0vblRr87vTpJTFEqZ6Y6mcWTK0XpwNriC3pzRfp5-H1hy3CUhLiOMPB0k1hactsYW-Pa_EBobag_B6kLNmdI8iczcx_2cdjgfI-h4iic-iCc6F0_xlK6Xlw8O7Y67Bz3nPAp4fQGntQ_9jCMl-eeCL6gJ5i9nKZv_</recordid><startdate>19910415</startdate><enddate>19910415</enddate><creator>DUBOIS, D. 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A ; RUSSELL, D</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c391t-5b7a9b06fcc83e9fdaf582234dab2136dab913d96c19a12a1a972001bcafba3f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</topic><topic>CORRELATIONS</topic><topic>DATA</topic><topic>EARTH ATMOSPHERE</topic><topic>ELECTROMAGNETIC RADIATION</topic><topic>Exact sciences and technology</topic><topic>FLUCTUATIONS</topic><topic>INFORMATION</topic><topic>INTERACTIONS</topic><topic>ION DENSITY</topic><topic>IONOSPHERE</topic><topic>LASER RADIATION</topic><topic>LASER-PRODUCED PLASMA</topic><topic>NONLINEAR PROBLEMS</topic><topic>NUMERICAL DATA</topic><topic>NUMERICAL SOLUTION</topic><topic>Physics</topic><topic>Physics of gases, plasmas and electric discharges</topic><topic>Physics of plasmas and electric discharges</topic><topic>PLANETARY IONOSPHERES</topic><topic>PLASMA</topic><topic>PLASMA WAVES</topic><topic>RADIATIONS</topic><topic>THEORETICAL DATA</topic><topic>TURBULENCE</topic><topic>TWO-DIMENSIONAL CALCULATIONS</topic><topic>VARIATIONS 640201 -- Atmospheric Physics-- Auroral, Ionospheric, & Magetospheric Phenomena</topic><topic>WAVE PROPAGATION</topic><topic>Waves, oscillations, and instabilities in plasmas and intense beams</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>DUBOIS, D. 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A</au><au>RUSSELL, D</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Coexistence of parametric decay cascades and caviton collapse at subcritical densities</atitle><jtitle>Physical review letters</jtitle><addtitle>Phys Rev Lett</addtitle><date>1991-04-15</date><risdate>1991</risdate><volume>66</volume><issue>15</issue><spage>1970</spage><epage>1973</epage><pages>1970-1973</pages><issn>0031-9007</issn><eissn>1079-7114</eissn><coden>PRLTAO</coden><abstract>Results are reported on two-dimensional numerical solutions of Zakharov's model for strong Langmuir turbulence excited by powerful EM pump waves at subcritical densities, as in HF modification of the ionosphere and laser- plasma interactions. The results show that truncated parametric decay cascades can coexist with caviton collapse for moderate pump power. A high level of ion density fluctuations, driven primarily by caviton collapse, produces energy and power spectra which are not consistent with conventional weak turbulence theory. (Author)</abstract><cop>Ridge, NY</cop><pub>American Physical Society</pub><pmid>10043357</pmid><doi>10.1103/PhysRevLett.66.1970</doi><tpages>4</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0031-9007 |
| ispartof | Physical review letters, 1991-04, Vol.66 (15), p.1970-1973 |
| issn | 0031-9007 1079-7114 |
| language | eng |
| recordid | cdi_osti_scitechconnect_5716596 |
| source | American Physical Society Journals |
| subjects | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CORRELATIONS DATA EARTH ATMOSPHERE ELECTROMAGNETIC RADIATION Exact sciences and technology FLUCTUATIONS INFORMATION INTERACTIONS ION DENSITY IONOSPHERE LASER RADIATION LASER-PRODUCED PLASMA NONLINEAR PROBLEMS NUMERICAL DATA NUMERICAL SOLUTION Physics Physics of gases, plasmas and electric discharges Physics of plasmas and electric discharges PLANETARY IONOSPHERES PLASMA PLASMA WAVES RADIATIONS THEORETICAL DATA TURBULENCE TWO-DIMENSIONAL CALCULATIONS VARIATIONS 640201 -- Atmospheric Physics-- Auroral, Ionospheric, & Magetospheric Phenomena WAVE PROPAGATION Waves, oscillations, and instabilities in plasmas and intense beams |
| title | Coexistence of parametric decay cascades and caviton collapse at subcritical densities |
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