Diffraction of waves by an impedance half-plane between free space and an anisotropic medium
PHYSICA SCRIPTA, cilt.101, sa.32, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 101 Sayı: 32
- Basım Tarihi: 2026
- Doi Numarası: 10.1088/1402-4896/ae92bc
- Dergi Adı: PHYSICA SCRIPTA
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Compendex, INSPEC, zbMATH
- Gazi Üniversitesi Adresli: Evet
Özet
In this study, the diffraction of waves by an impedance half-plane at the planar interface between free space and an anisotropic medium is investigated. The anisotropic medium is characterized by a dielectric tensor matrix. An external uniform magnetic field is aligned with the half-plane's edge. A magnetic-polarized plane wave with an arbitrary angle of incidence illuminates the half-plane. Geometric-optics (GO) waves are evaluated based on the problem's geometry. The diffracted waves are derived using an analogy between the scattered GO waves and the diffracted waves in the transition regions. The uniform theory of diffraction is used to express the evaluated waves in terms of Fresnel functions, thereby achieving uniform wave behavior across the transition regions. Their far-field behavior is investigated numerically across a range of parameter sets. A shift in the actual location of the shadow boundary is observed due to the derived coefficients for anisotropic plasma. The results agree with Sommerfeld's exact solution in the limiting case.