Relativistic-electron-beam/target interaction in plasma channels
Journal Article
·
· Phys. Fluids; (United States)
A model describing the transport of relativistic electron beams in plasma channels and their subsequent interaction with solid targets is developed and applied to single-beam and multiple-beam configurations. For single beams the targets consist of planar tantalum foils and, in some cases, cusp fields on the transmission side of the foils are employed to improve beam/target coupling efficiency. In the multi-beam configurations, several beams are arranged in wagon-wheel fashion so as to converge upon cylindrical targets, consisting of either hollow tantalum or solid graphite cylinders, located at the hub. For 0.3-cm beam radii that are less than or equal to the channel radii, mean specific power depositions up to about 17 TW/g per MA of injected beam current are obtained for single beams; 12-beam results are typically an order-of-magnitude less. The corresponding enhancements are up to five times the collisional stopping power for either single or multiple beams. Substantial improvement is predicted for the multi-beam interaction should future channel technology permit transport at higher current densities in smaller channels.
- Research Organization:
- Sandia Laboratories, Albuquerque, New Mexico 87185
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5151967
- Journal Information:
- Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 23:8; ISSN PFLDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101 -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700208* -- Fusion Power Plant Technology-- Inertial Confinement Technology
BEAM OPTICS
BEAM-PLASMA SYSTEMS
BEAMS
CARBON
CYLINDERS
DIFFERENTIAL EQUATIONS
ELECTRON BEAM TARGETS
ELECTRON BEAMS
ELEMENTS
ENERGY RANGE
EQUATIONS
EQUATIONS OF MOTION
FOILS
GRAPHITE
LEPTON BEAMS
METALS
NONMETALS
NUMERICAL SOLUTION
PARTICLE BEAMS
REFRACTORY METALS
RELATIVISTIC RANGE
TANTALUM
TARGETS
THREE-DIMENSIONAL CALCULATIONS
TRAJECTORIES
TRANSITION ELEMENTS
TRANSPORT THEORY
700101 -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700208* -- Fusion Power Plant Technology-- Inertial Confinement Technology
BEAM OPTICS
BEAM-PLASMA SYSTEMS
BEAMS
CARBON
CYLINDERS
DIFFERENTIAL EQUATIONS
ELECTRON BEAM TARGETS
ELECTRON BEAMS
ELEMENTS
ENERGY RANGE
EQUATIONS
EQUATIONS OF MOTION
FOILS
GRAPHITE
LEPTON BEAMS
METALS
NONMETALS
NUMERICAL SOLUTION
PARTICLE BEAMS
REFRACTORY METALS
RELATIVISTIC RANGE
TANTALUM
TARGETS
THREE-DIMENSIONAL CALCULATIONS
TRAJECTORIES
TRANSITION ELEMENTS
TRANSPORT THEORY