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Cylindrical and spherical dust ion-acoustic solitary waves in quantum plasmas |
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| Authors: | S.A. Khan S. Mahmood |
| Affiliation: | a Department of Physics, COMSATS Institute of Information Technology, Islamabad, Pakistan b Department of Physics, Government College Bagh AJK, Pakistan c Theoretical Plasma Physics Division, PINSTECH, PO Box Nilore, Islamabad, Pakistan d Theoretical Plasma Physics Group, Department of Physics, Quaid-i-Azam University, Islamabad, Pakistan |
| Abstract: | Dust ion-acoustic solitary waves in unmagnetized quantum plasmas are studied in spherical and cylindrical geometries. Using quantum hydrodynamic model, the electrostatic waves are investigated in the weakly nonlinear limit. A deformed Korteweg-de Vries (dKdV) equation is derived by using the reductive perturbation method and its numerical solutions are also presented. The quantum diffraction and quantum statistical effects incorporated in the system modifies the characteristics of dust ion-acoustic waves in cylindrical and spherical geometries. The role of stationary dust particles in quantum plasmas are also discussed. It is shown that the cylindrical and spherical dust ion-acoustic solitary waves behave quite differently from one-dimensional planar solitary waves in quantum plasmas. |
| Keywords: | 52.35.Fp 52.35.Mw 52.27.Lw 52.27.-h |
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