Effect of non-thermal electron and positron on the dust ion acoustic solitary wave in the presence of relativistic thermal magnetized ions

Dev, Apul N.; Deka, Manoj Kr.; Kalita, Ranjit Kumar; Sarma, Jnanjyoti

doi:10.1140/epjp/s13360-020-00861-3

Cited by 11 publications

(1 citation statement)

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“…The IA waves [1,2] are found to be modified in an electron-ion-negative dust plasma system theoretically [3][4][5] as well as experimentally. [6][7][8] It has been found that the increase in number density and charge of the negative dust species enhances the phase speed of the IA waves, and consequently support the supersonic [9][10][11][12][13][14][15][16][17] solitary waves (SWs).…”

Section: Introductionmentioning

confidence: 99%

Roles of positively charged dust in the formation of ion‐acoustic subsonic solitary waves in electron‐ion‐positively charged dust plasmas

Mamun

2021

Contributions to Plasma Physics

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The electron-ion-positively charged dust plasma system containing Boltzmann distributed electron species, cold inertial ion species, and stationary positively charged dust (pcd) species are considered. The roles of pcd species in the formation of ion-acoustic (IA) subsonic solitary waves (SWs) are investigated by the pseudo-potential approach, which is valid for arbitrary amplitude time-independent subsonic SWs, as well as by the reductive perturbation method, which is valid for the time-dependent small amplitude subsonic SWs. It is observed that the presence of the pcd species reduces the phase speed of the IA waves, and consequently supports the IA subsonic SWs with the positive wave potential in such electron-ion-pcd plasmas. This is due to the reduction of the space charge electric field by the presence of the pcd species. The applications of the work in space environments (viz. Earth's mesosphere, cometary tails, Jupiter's magnetosphere, etc.), where pcd species have been detected, are briefly discussed.

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