Stimulated Brillouin Scattering of Elliptical q-Gaussian Laser Beams in Plasmas with Axial Density Ramp: Effect of Self-Focusing
Theoretical investigation on stimulated Brillouin scattering of intense q-Gaussian laser beams interacting with axially nonuniform plasmas has been presented. A ramp-shaped density profile has modelled the axial inhomogeneity of the plasma and the optical nonlinearity of the plasma has been consider...
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| Veröffentlicht in: | Journal of applied spectroscopy 2023, Vol.89 (6), p.1168-1176 |
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| container_title | Journal of applied spectroscopy |
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| creator | Gupta, Naveen Choudhry, Suman Bhardwaj, S. B. |
| description | Theoretical investigation on stimulated Brillouin scattering of intense q-Gaussian laser beams interacting with axially nonuniform plasmas has been presented. A ramp-shaped density profile has modelled the axial inhomogeneity of the plasma and the optical nonlinearity of the plasma has been considered to be originating owing to the dependence of the relativistic mass of the plasma electrons on laser intensity. An intense laser beam with frequency ω
0
propagating through plasma gets coupled with a preexisting ion acoustic wave (IAW) at frequency ω
ia
and produces a backscattered wave at frequency ω
s
= ω
0
– ω
ia
. Using variational theory semi-analytical solution of the set of coupled wave equations for the pump, an IAW and a scattered wave have been obtained under W.K.B. approximation. It has been noted that the power of the scattered wave is significantly affected by the self-focusing effect of the pump beam. |
| doi_str_mv | 10.1007/s10812-023-01483-0 |
| format | Article |
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0
propagating through plasma gets coupled with a preexisting ion acoustic wave (IAW) at frequency ω
ia
and produces a backscattered wave at frequency ω
s
= ω
0
– ω
ia
. Using variational theory semi-analytical solution of the set of coupled wave equations for the pump, an IAW and a scattered wave have been obtained under W.K.B. approximation. It has been noted that the power of the scattered wave is significantly affected by the self-focusing effect of the pump beam.</description><identifier>ISSN: 0021-9037</identifier><identifier>EISSN: 1573-8647</identifier><identifier>DOI: 10.1007/s10812-023-01483-0</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Acoustic propagation ; Analysis ; Analytical Chemistry ; Atomic/Molecular Structure and Spectra ; Backscattering ; Density ; Exact solutions ; Gaussian beams (optics) ; Inhomogeneity ; Ion acoustic waves ; Laser beams ; Mathematical analysis ; Nonuniform plasmas ; Pellet fusion ; Physics ; Physics and Astronomy ; Scattering ; Wave equations ; Wave propagation</subject><ispartof>Journal of applied spectroscopy, 2023, Vol.89 (6), p.1168-1176</ispartof><rights>Springer Science+Business Media, LLC, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</rights><rights>COPYRIGHT 2023 Springer</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c322t-ef571781f35ca401d61a07299100e68a8eed7af104170d9d57484882bfe841e33</citedby><cites>FETCH-LOGICAL-c322t-ef571781f35ca401d61a07299100e68a8eed7af104170d9d57484882bfe841e33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10812-023-01483-0$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10812-023-01483-0$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Gupta, Naveen</creatorcontrib><creatorcontrib>Choudhry, Suman</creatorcontrib><creatorcontrib>Bhardwaj, S. B.</creatorcontrib><title>Stimulated Brillouin Scattering of Elliptical q-Gaussian Laser Beams in Plasmas with Axial Density Ramp: Effect of Self-Focusing</title><title>Journal of applied spectroscopy</title><addtitle>J Appl Spectrosc</addtitle><description>Theoretical investigation on stimulated Brillouin scattering of intense q-Gaussian laser beams interacting with axially nonuniform plasmas has been presented. A ramp-shaped density profile has modelled the axial inhomogeneity of the plasma and the optical nonlinearity of the plasma has been considered to be originating owing to the dependence of the relativistic mass of the plasma electrons on laser intensity. An intense laser beam with frequency ω
0
propagating through plasma gets coupled with a preexisting ion acoustic wave (IAW) at frequency ω
ia
and produces a backscattered wave at frequency ω
s
= ω
0
– ω
ia
. Using variational theory semi-analytical solution of the set of coupled wave equations for the pump, an IAW and a scattered wave have been obtained under W.K.B. approximation. It has been noted that the power of the scattered wave is significantly affected by the self-focusing effect of the pump beam.</description><subject>Acoustic propagation</subject><subject>Analysis</subject><subject>Analytical Chemistry</subject><subject>Atomic/Molecular Structure and Spectra</subject><subject>Backscattering</subject><subject>Density</subject><subject>Exact solutions</subject><subject>Gaussian beams (optics)</subject><subject>Inhomogeneity</subject><subject>Ion acoustic waves</subject><subject>Laser beams</subject><subject>Mathematical analysis</subject><subject>Nonuniform plasmas</subject><subject>Pellet fusion</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Scattering</subject><subject>Wave equations</subject><subject>Wave propagation</subject><issn>0021-9037</issn><issn>1573-8647</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNp9kV1rFDEUhgdRcK3-Aa8CXnkx9eRjNhnvtu32AxaUrl6HmDlZUzIfTTLY3vnTzToF6Y0EEgjPc05y3qp6T-GUAshPiYKirAbGa6BClf1FtaKN5LVaC_myWgEwWrfA5evqTUp3ANAqBqvq9z77fg4mY0fOog9hnP1A9tbkjNEPBzI6sg3BT9lbE8h9fWXmlLwZyM4kjOQMTZ9IUb4Gk3qTyC-ff5LNgy_wBQ7J50dya_rpM9k6hzYf6-0xuPpytHMqDd5Wr5wJCd89nSfV98vtt_Prevfl6uZ8s6stZyzX6BpJpaKON9YIoN2aGpCsbcv3ca2MQuykcRQEldC1XSOFEkqxHw6VoMj5SfVhqTvF8X7GlPXdOMehtNRMStHyNTBRqNOFOpiA2g9uzNHYsjrsvR0HdL7cb2QDDedl5EX4-EwoTMaHfDhOSd_sb5-zbGFtHFOK6PQUfW_io6agjzHqJUZdYtR_Y9RQJL5IaTrmgfHfu_9j_QGDWp4_</recordid><startdate>2023</startdate><enddate>2023</enddate><creator>Gupta, Naveen</creator><creator>Choudhry, Suman</creator><creator>Bhardwaj, S. B.</creator><general>Springer US</general><general>Springer</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>ISR</scope></search><sort><creationdate>2023</creationdate><title>Stimulated Brillouin Scattering of Elliptical q-Gaussian Laser Beams in Plasmas with Axial Density Ramp: Effect of Self-Focusing</title><author>Gupta, Naveen ; Choudhry, Suman ; Bhardwaj, S. B.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c322t-ef571781f35ca401d61a07299100e68a8eed7af104170d9d57484882bfe841e33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Acoustic propagation</topic><topic>Analysis</topic><topic>Analytical Chemistry</topic><topic>Atomic/Molecular Structure and Spectra</topic><topic>Backscattering</topic><topic>Density</topic><topic>Exact solutions</topic><topic>Gaussian beams (optics)</topic><topic>Inhomogeneity</topic><topic>Ion acoustic waves</topic><topic>Laser beams</topic><topic>Mathematical analysis</topic><topic>Nonuniform plasmas</topic><topic>Pellet fusion</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Scattering</topic><topic>Wave equations</topic><topic>Wave propagation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gupta, Naveen</creatorcontrib><creatorcontrib>Choudhry, Suman</creatorcontrib><creatorcontrib>Bhardwaj, S. B.</creatorcontrib><collection>CrossRef</collection><collection>Science In Context</collection><jtitle>Journal of applied spectroscopy</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gupta, Naveen</au><au>Choudhry, Suman</au><au>Bhardwaj, S. B.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Stimulated Brillouin Scattering of Elliptical q-Gaussian Laser Beams in Plasmas with Axial Density Ramp: Effect of Self-Focusing</atitle><jtitle>Journal of applied spectroscopy</jtitle><stitle>J Appl Spectrosc</stitle><date>2023</date><risdate>2023</risdate><volume>89</volume><issue>6</issue><spage>1168</spage><epage>1176</epage><pages>1168-1176</pages><issn>0021-9037</issn><eissn>1573-8647</eissn><abstract>Theoretical investigation on stimulated Brillouin scattering of intense q-Gaussian laser beams interacting with axially nonuniform plasmas has been presented. A ramp-shaped density profile has modelled the axial inhomogeneity of the plasma and the optical nonlinearity of the plasma has been considered to be originating owing to the dependence of the relativistic mass of the plasma electrons on laser intensity. An intense laser beam with frequency ω
0
propagating through plasma gets coupled with a preexisting ion acoustic wave (IAW) at frequency ω
ia
and produces a backscattered wave at frequency ω
s
= ω
0
– ω
ia
. Using variational theory semi-analytical solution of the set of coupled wave equations for the pump, an IAW and a scattered wave have been obtained under W.K.B. approximation. It has been noted that the power of the scattered wave is significantly affected by the self-focusing effect of the pump beam.</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s10812-023-01483-0</doi><tpages>9</tpages></addata></record> |
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| subjects | Acoustic propagation Analysis Analytical Chemistry Atomic/Molecular Structure and Spectra Backscattering Density Exact solutions Gaussian beams (optics) Inhomogeneity Ion acoustic waves Laser beams Mathematical analysis Nonuniform plasmas Pellet fusion Physics Physics and Astronomy Scattering Wave equations Wave propagation |
| title | Stimulated Brillouin Scattering of Elliptical q-Gaussian Laser Beams in Plasmas with Axial Density Ramp: Effect of Self-Focusing |
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