The interaction of electromagnetic waves in metals
Abstract
The interaction of two electromagnetic waves with very different frequencies is investigated theoretically. The relation of the LF-surface impedance (LFSI) to the HF-signal amplitude (HFSA), and the strength of the external magnetic field is studied in detail. Exact asymptotic solutions are obtained for weak and strong nonlinearities of the field. It is shown that nonlinear impedance is a product of the quasilinear LFSI and a certain factor containing the entire relation HFSA to h sub zero. Nonlinear impedance may either decrease or increase many times within a narrow range of HFSA and h sub zero. The LFSI exhibited hysteresis behavior in the function of the external magnetic field when HFSA was sufficiently high. The theoretical calculations were compared with the experimental results of Dolgopolov et al. (1980), and substantial agreement was found.
- Publication:
-
Zhurnal Eksperimentalnoi i Teoreticheskoi Fiziki
- Pub Date:
- July 1985
- Bibcode:
- 1985ZhETF..89..209M
- Keywords:
-
- Electromagnetic Radiation;
- Metals;
- Wave Interaction;
- Asymptotic Methods;
- Electron Trajectories;
- Frequencies;
- Impedance;
- Magnetic Flux;
- Nonlinearity;
- Propagation Modes;
- Surface Properties;
- Solid-State Physics