Absolute and convective instabilities of electrostatic ion cyclotron waves in an ion beam-plasma system
- 1. Ehime Univ., Matsuyama (Japan). Faculty of Science
Description
Two modes of electrostatic ion cyclotron waves excited in an ion beam plasma system are observed. One of these modes has a sharp and strong spectrum and its dispersion characteristics coincides with one of the backward electrostatic ion cyclotron wave with respect to the propagating component parallel to the magnetic field, the other has a broad spectrum and its dispersion characteristics coincides with one of the forward electrostatic ion cyclotron wave. These excited backward and forward waves occur due to the absolute and convective instabilities. And the transition between two instabilities is observed depending on system parameters. Also, the experimentally obtained temporal and spatial growth of these instabilities are compared with the theory of the weak beam approximation. (author)
Additional details
Publishing Information
- Journal Title
- J. Phys. Soc. Jpn.
- Journal Volume
- 48
- Journal Issue
- 3
- Series
- J. Phys. Soc. Jpn.
- Journal Page Range
- 983-992
- ISSN
- 0031-9015
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 12593761
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ABSOLUTE INSTABILITIES; BEAM INJECTION; BEAM-PLASMA SYSTEMS; CONVECTIVE INSTABILITIES; DENSITY; DISPERSION RELATIONS; EXPERIMENTAL DATA; ION BEAMS; ION WAVES; PLASMA; SPECTRA
- Descriptors DEC
- BEAMS; DATA; INFORMATION; INSTABILITY; NUMERICAL DATA; PHYSICAL PROPERTIES; PLASMA INSTABILITY; PLASMA WAVES