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<p>Herein, we report an analytical theoretical model to excite the electrostatic lower hybrid wave from the nonlinear (counterpropagating) interaction of Hermite cosh-Gaussian and cosh-Gaussian laser beams in collisional magnetized plasma embedded with spherical nanoparticles. As the counterpropagating laser beams interact with this materialistic medium, beat wave generation process takes into the consideration. The spatial field of each laser beam ionized the atoms of spherical nanoparticle and eventually converted it into the plasma plume balls. The beating of two laser beams produces nonlinear ponderomotive to the electronic cloud of nanoplasma. It has much potential to drive the pre-existed electrostatic space charge field and couple the electrostatic lower hybrid wave. The resonant coupling of electrostatic lower hybrid wave is observed as the beat wave frequency of two laser beams approaches near the <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(1/\sqrt{3}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>1</mn> <mo stretchy="false">/</mo> <msqrt> <mn>3</mn> </msqrt> </mrow> </math></EquationSource> </InlineEquation> times the electron plasmons frequency. The power amplitude of electrostatic lower hybrid wave is strongly dependent on laser beams parameter (laser beam width, beam decentered parameter, and Hermite polynomial mode index) and medium parameter (electron–ion collisional frequency, electron cyclotron frequency, spherical nano particle radii, and interparticle separation). The applied static magnetic field enhances the electrostatic wave excitation and controls the coupling. This electrostatic wave excitation theory might be applicable in enhanced laser absorption, charged particle acceleration, electron heating, and high harmonic generation process.</p>

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Influence of external magnetic field on the excitation of lower hybrid wave by beating of two different profile laser beams in spherical nanoparticles

  • 期刊论文

  • 发表日期：

    2026年3月18日

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  • Umesh Kumar Tiwari,
  • Asfiya Ansari,
  • M. S. Patel,
  • Abhimanyu Yadav,
  • S. P. Mishra,
  • Arvind Kumar,
  • Asheel Kumar,
  • Ashish Varma

摘要

Herein, we report an analytical theoretical model to excite the electrostatic lower hybrid wave from the nonlinear (counterpropagating) interaction of Hermite cosh-Gaussian and cosh-Gaussian laser beams in collisional magnetized plasma embedded with spherical nanoparticles. As the counterpropagating laser beams interact with this materialistic medium, beat wave generation process takes into the consideration. The spatial field of each laser beam ionized the atoms of spherical nanoparticle and eventually converted it into the plasma plume balls. The beating of two laser beams produces nonlinear ponderomotive to the electronic cloud of nanoplasma. It has much potential to drive the pre-existed electrostatic space charge field and couple the electrostatic lower hybrid wave. The resonant coupling of electrostatic lower hybrid wave is observed as the beat wave frequency of two laser beams approaches near the \(1/\sqrt{3}\) 1 / 3 times the electron plasmons frequency. The power amplitude of electrostatic lower hybrid wave is strongly dependent on laser beams parameter (laser beam width, beam decentered parameter, and Hermite polynomial mode index) and medium parameter (electron–ion collisional frequency, electron cyclotron frequency, spherical nano particle radii, and interparticle separation). The applied static magnetic field enhances the electrostatic wave excitation and controls the coupling. This electrostatic wave excitation theory might be applicable in enhanced laser absorption, charged particle acceleration, electron heating, and high harmonic generation process.