Plasma heating by a relativistic electron beam
Reported are measurements on the interaction between a relativistic electron beam (REB) with the parameters 800 kV, 6 kA, 50--150 nsec, and a plasma with a density of n/sub e/ = 1.0 x 10/sup 19/ m/sup -3/--1.0 x 10/sup 20/ m/sup -3/. The electron temperature during and after the beam pulse is obtained by means of Thomson scattering. Also measured is the angular distribution of the beam electrons as a function of time and position. By varying the angular spread of the beam it is possible to pass from a kinetic to a quasihydrodynamic interaction. In both regimes measurements are compared with the appropriate theoretical model. Energy transfer is largest in the quasihydrodynamic regime and amounts to 2.5 x 10/sup 3/ J/m/sup 3/ or 2.2 x 10/sup 16/ eV/cm/sup 3/. The electron temperature reaches values of 150 eV and appears limited by the electron heat conduction along the magnetic field.
- Research Organization:
- Association Euratom-FOM, FOM Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam, The Netherlands
- OSTI ID:
- 5117668
- Journal Information:
- Phys. Fluids; (United States), Vol. 27:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ELECTRON BEAMS
ANGULAR DISTRIBUTION
PLASMA
ELECTRON BEAM INJECTION
PLASMA HEATING
PLASMA DIAGNOSTICS
THOMSON SCATTERING
CORRELATIONS
ELECTRON TEMPERATURE
ENERGY TRANSFER
KEV RANGE 100-1000
MAGNETIC FIELDS
PULSES
RELATIVISTIC RANGE
TIME DEPENDENCE
BEAM INJECTION
BEAMS
DISTRIBUTION
ENERGY RANGE
HEATING
INELASTIC SCATTERING
KEV RANGE
LEPTON BEAMS
PARTICLE BEAMS
SCATTERING
700102* - Fusion Energy- Plasma Research- Diagnostics
700101 - Fusion Energy- Plasma Research- Confinement
Heating
& Production