Waves and Negative Refraction in Magnetized Plasma with Ferrite Grains
| dc.contributor.author | Mehretie, Markos | |
| dc.date.accessioned | 2018-06-28T08:58:26Z | |
| dc.date.accessioned | 2023-11-09T11:23:53Z | |
| dc.date.available | 2018-06-28T08:58:26Z | |
| dc.date.available | 2023-11-09T11:23:53Z | |
| dc.date.issued | 2012-06 | |
| dc.description.abstract | This thesis describes that some electrodynamical properties of left-handed media and experiments realize to allow these metamaterials. The dispersion properties of a material is controlled by both dilectric permittivity and magnetic permeability tensors. The dispersion of the permittivity is caused by electron-ion plasma and the dispersion of permeability is caused by the high frequency magnetization of the ferromagnetic grains. The propagation of high frequency EMWs in the low temperature magnetized plasma with ferromagnetic grains (MPFG) is analyzed. Our MPFG system becomes transparent for the waves that cannot propagate in conventional magnetized plasma, which is the dispersion of permeability is zero. It is shown that the refractive index of the extraordinary wave propagating along the external magnetic eld through MPFG can be negative and the phase velocity also negative in the vicinity of !c. The strong dispersion of the refractive index and the group velocity results in the spreading of the wave packets, which propagate with velocity much smaller than the speed of light | en_US |
| dc.identifier.uri | http://10.90.10.223:4000/handle/123456789/4579 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Waves and Negative Refraction | en_US |
| dc.title | Waves and Negative Refraction in Magnetized Plasma with Ferrite Grains | en_US |
| dc.type | Thesis | en_US |