Unified Consideration of Wave Amplification in Moving Media
- 1 November 1964
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 35 (11) , 3273-3279
- https://doi.org/10.1063/1.1713209
Abstract
By quantization of wave fields in a moving medium we have quanta of negative energy when the velocity of the moving medium exceeds the phase velocity of a wave in the moving medium. Wave amplification phenomena caused by negative quanta are classified in four types, to each of which several kinds of known amplification phenomena or instabilities are attached, e.g. a traveling‐wave tube, two‐stream instability, ultrasonic wave amplification in a CdS crystal, roton excitation in a superfluid helium, beam‐plasma instability, etc. A new type of amplifier, an inverse maser, is proposed.This publication has 16 references indexed in Scilit:
- Negative Absorption Due to Coulomb Scattering of an Electron StreamPhysical Review B, 1964
- Amplification of Waves due to Quanta with Negative EnergyJournal of Applied Physics, 1964
- Quantum Theory of Negative Energy in Microwave TubesJapanese Journal of Applied Physics, 1964
- The radiation of electromagnetic waves and the instability of electrons moving at super-light velocity in a mediumPhilosophical Magazine, 1962
- Ultrasonic Amplification in CdSPhysical Review Letters, 1961
- In What Sense Do Slow Waves Carry Negative Energy?Journal of Applied Physics, 1960
- CERTAIN THEORETICAL ASPECTS OF RADIATION DUE TO SUPERLUMINAL MOTION IN A MEDIUMSoviet Physics Uspekhi, 1960
- The Resistive-Wall AmplifierProceedings of the IRE, 1953
- Possible Fluctuations in Electron Streams Due to IonsJournal of Applied Physics, 1948
- Viscosity of Liquid Helium below the λ-PointNature, 1938