| Journal: | Brazilian journal of physics |
| Database: | PERIÓDICA |
| System number: | 000398959 |
| ISSN: | 0103-9733 |
| Authors: | Hossen, M.A1 Hossen, M.R1 Mamun, A.A1 |
| Institutions: | 1Jahangirnagar University, Department of Physics, Daca. Bangladesh |
| Year: | 2014 |
| Season: | Dic |
| Volumen: | 44 |
| Number: | 6 |
| Pages: | 703-710 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico |
| English abstract | A general theory for nonlinear propagation of one dimensional modified ion-acoustic waves in an unmagnetized electron-positron-ion (e-p-i) degenerate plasma is investigated. This plasma system is assumed to contain relativistic electron and positron fluids, non-degenerate viscous positive ions, and negatively charged static heavy ions. The modified Burgers and Gardner equations have been derived by employing the reductive perturbation method and analyzed in order to identify the basic features (polarity, width, speed, etc.) of shock and double layer (DL) structures. It is observed that the basic features of these shock and DL structures obtained from this analysis are significantly different from those obtained from the analysis of standard Gardner or Burgers equations. The implications of these results in space and interstellar compact objects (viz. nonrotating white dwarfs, neutron stars, etc.) are also briefly mentioned |
| Disciplines: | Física y astronomía |
| Keyword: | Física de materia condensada, Ondas acústicas de iones, Plasmas, Ondas de choque, Iones negativos |
| Keyword: | Physics and astronomy, Condensed matter physics, Ion acoustic waves, Plasmas, Shock waves, Negative ions |
| Full text: | Texto completo (Ver PDF) |
