Tahmina Akhter

Multidimensional instabilities of dust-acoustic waves in plasma

• Broschiertes Buch

Produktbeschreibung

A theoretical investigation has been made on electrostatic perturbations associated with dust-acoustic (DA) solitary waves (SWs) in four-component magnetized dusty plasmas (composed of non-inertial electron and ion fluids, and inertial negatively as well as positively charged dust fluids). The reductive perturbation method has been employed in order to derive the Korteweg-de Vries equation and the Zakharov-Kuznetsov (ZK) equation which admit solitary wave solutions under certain conditions. The ZK equation has been further analyzed to study the multi-dimensional instability of the SWs by the small perturbation expansion technique. The basic features (polarity, amplitude, width, etc.) are found to be significantly modified by the number densities and masses of the opposite polarity dust grain in presence of external magnetic field. The magnitude of the external magnetic field has no direct effect on the amplitude of SWs, but it does have a direct effect on the width. The implications of our results and the underlying physics of the DA SWs, which are relevant to space and laboratory dusty plasmas, are discussed.

Produktdetails

• Verlag: LAP Lambert Academic Publishing
• Seitenzahl: 116
• Erscheinungstermin: 7. Januar 2015
• Englisch
• Abmessung: 220mm x 150mm x 8mm
• Gewicht: 191g
• ISBN-13: 9783659625893
• ISBN-10: 3659625892
• Artikelnr.: 42074716

Autorenporträt

T. Akhter was born in 1989 in Chandpur, Bangladesh. She receivedthe B Sc. degree in 2010 and M S in 2012, in Physics from theJahangirnagar University, Bangladesh. She is now working asresearch doctorate in the University of Naples Federico II. Hermain research field is theoretical plasma and particle beamphysics.