Generation of whistler wave by parametric decay of lower hybrid wave in a complex plasma

The effect of fluctuations of dust grains on the parametric up conversion of lower hybrid waves into a whistler wave in a complex plasma is studied. In a complex plasma, which contains ambient magnetic field, the lower hybrid pump possessing a large amplitude decays into two modes: a whistler wave m...

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Autores principales:	Amit Kumar, Ruby Gupta, Jyotsna Sharma
Formato:	article
Lenguaje:	EN
Publicado:	AIP Publishing LLC 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/487728ab4bc94c94b34186f0ec77ff01
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spelling	oai:doaj.org-article:487728ab4bc94c94b34186f0ec77ff012021-12-01T18:52:06ZGeneration of whistler wave by parametric decay of lower hybrid wave in a complex plasma2158-322610.1063/5.0072235https://doaj.org/article/487728ab4bc94c94b34186f0ec77ff012021-11-01T00:00:00Zhttp://dx.doi.org/10.1063/5.0072235https://doaj.org/toc/2158-3226The effect of fluctuations of dust grains on the parametric up conversion of lower hybrid waves into a whistler wave in a complex plasma is studied. In a complex plasma, which contains ambient magnetic field, the lower hybrid pump possessing a large amplitude decays into two modes: a whistler wave mode and a lower hybrid wave mode having low frequency. Furthermore, a ponderomotive force is exerted by the lower hybrid pump and whistler side bands on the existing electrons, which drives the lower hybrid decay mode. Furthermore, the coupling of v⃗1, the oscillatory velocity of low-frequency lower hybrid waves, along with the density perturbations, produces a nonlinear current, which drives the whistler mode. The growth rate Γ (sec−1) of lower hybrid waves scales linearly with the amplitude of the pump waves, and it increases as the amplitude of the lower hybrid pump waves increase. Moreover, the dust grain charges influence the instability appreciably. Our theoretically observed growth rate decreases with the increase in the relative density d=n0i/n0e of negatively charged dust grains, while it decreases with the size of dust grains a (μm). The growth rate varies inversely to the electron cyclotron frequency ωce, and it decreases as ωce increases. The results presented in the article are efficiently able to elaborate the basics of the whistler wave excitation in complex plasmas, space plasmas, processing in solid state plasmas, fusion plasmas, and laboratory plasmas as well as industrial plasmas.Amit KumarRuby GuptaJyotsna SharmaAIP Publishing LLCarticlePhysicsQC1-999ENAIP Advances, Vol 11, Iss 11, Pp 115022-115022-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Amit Kumar Ruby Gupta Jyotsna Sharma Generation of whistler wave by parametric decay of lower hybrid wave in a complex plasma
description	The effect of fluctuations of dust grains on the parametric up conversion of lower hybrid waves into a whistler wave in a complex plasma is studied. In a complex plasma, which contains ambient magnetic field, the lower hybrid pump possessing a large amplitude decays into two modes: a whistler wave mode and a lower hybrid wave mode having low frequency. Furthermore, a ponderomotive force is exerted by the lower hybrid pump and whistler side bands on the existing electrons, which drives the lower hybrid decay mode. Furthermore, the coupling of v⃗1, the oscillatory velocity of low-frequency lower hybrid waves, along with the density perturbations, produces a nonlinear current, which drives the whistler mode. The growth rate Γ (sec−1) of lower hybrid waves scales linearly with the amplitude of the pump waves, and it increases as the amplitude of the lower hybrid pump waves increase. Moreover, the dust grain charges influence the instability appreciably. Our theoretically observed growth rate decreases with the increase in the relative density d=n0i/n0e of negatively charged dust grains, while it decreases with the size of dust grains a (μm). The growth rate varies inversely to the electron cyclotron frequency ωce, and it decreases as ωce increases. The results presented in the article are efficiently able to elaborate the basics of the whistler wave excitation in complex plasmas, space plasmas, processing in solid state plasmas, fusion plasmas, and laboratory plasmas as well as industrial plasmas.
format	article
author	Amit Kumar Ruby Gupta Jyotsna Sharma
author_facet	Amit Kumar Ruby Gupta Jyotsna Sharma
author_sort	Amit Kumar
title	Generation of whistler wave by parametric decay of lower hybrid wave in a complex plasma
title_short	Generation of whistler wave by parametric decay of lower hybrid wave in a complex plasma
title_full	Generation of whistler wave by parametric decay of lower hybrid wave in a complex plasma
title_fullStr	Generation of whistler wave by parametric decay of lower hybrid wave in a complex plasma
title_full_unstemmed	Generation of whistler wave by parametric decay of lower hybrid wave in a complex plasma
title_sort	generation of whistler wave by parametric decay of lower hybrid wave in a complex plasma
publisher	AIP Publishing LLC
publishDate	2021
url	https://doaj.org/article/487728ab4bc94c94b34186f0ec77ff01
work_keys_str_mv	AT amitkumar generationofwhistlerwavebyparametricdecayoflowerhybridwaveinacomplexplasma AT rubygupta generationofwhistlerwavebyparametricdecayoflowerhybridwaveinacomplexplasma AT jyotsnasharma generationofwhistlerwavebyparametricdecayoflowerhybridwaveinacomplexplasma
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Generation of whistler wave by parametric decay of lower hybrid wave in a complex plasma

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