THE RADIATION OF ELECTROMAGNETIC WAVES AND THE INSTABILITY OF ELECTRONS MOVING AT SUPER-LIGHT VELOCITY IN A MEDIUM

Journal Article · Thu Mar 01 04:00:00 EST 1962 · Phil. Mag.

DOI:https://doi.org/10.1080/14786436208212177· OSTI ID:4815769

Ginzburg, V L; Zheleznyakov, V V; Eidman, V Ya

ABS>The features of the radiation of electromagnetic waves by particles or systems (atoms, molecules, etc.) moving in a medium or near a medium (the moderating system) at super-light velocity can often be successfully analyzed by applying quantum considerations, even when the problem is a classical one. This is also the case for the radiation, absorption, and amplification of waves in beams of particles, and for the study of their instability. Considerations of this kind are discussed, including the problem of the classical force of reaction of the radiation when a charge moves in a medium. The basic result, which follows from both simple quantum considerations and classical calculations, is as follows: when the motion is at super-light velocity, the radiation reaction force which changes the amplitude of oscillation of a particle decreases, and in some cases even changes sign, i.e., responds to the building up of oscillations and not to friction. In accordance wlth this fact, when beanas of particles are moving in a medium at super-light velocity they become unstable, and the electromagnetic waves are amplified. (auth)

• Research Organization: Lebedev Inst. of Physics, Moscow
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-021316
• OSTI ID: 4815769
• Journal Information: Phil. Mag., Journal Name: Phil. Mag. Vol. Vol: (8), 7
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ATOMS
ELECTROMAGNETIC WAVES
ELECTRONS
MODERATORS
MOLECULES
MOTION
PARTICLES
PHYSICS
QUANTUM MECHANICS
RADIATIONS
STABILITY
VELOCITY
WAVE PROPAGATION