Beat wave acceleration experiments at INRS-energies

Conference · Tue May 05 04:00:00 EDT 1987 · AIP Conf. Proc.; (United States)

OSTI ID:5941120

Martin, F; Brodeur, P; Matte, J P; Pepin, H; Ebrahim, E

A novel approach to experimentally verify electron acceleration by a resonant beat wave has been implemented. There are several distinctive features in this experiment. The high intensity, two frequency CO/sub 2/ laser pulse produces the resonant plasma by laser breakdown of background gas prior to stimulating the beat wave when resonance (..omega../sub p//sub e/ = ..delta omega..) is reached. An external source of high energy electrons (0.2 MeVless than or equal toEless than or equal to1.0 MeV) produced by CO/sub 2/ laser impact onto a solid Al target is used. A narrow energy group (..delta..E/E = 0.25%) of these electrons is ''imaged'' by a focussing dipole spectrograph into the resonant plasma parallel to the beat wave. This high intensity (approx. =10/sup 8/ el./cm/sup 2/-keV), pulsed (tau/sub r/approx. =0.3 nsec) electron source can easily be syncrhonized to the beat wave plasma and is well suited for good discrimination of accelerated electrons. Meaurement of the anti-Stokes sideband (8.7 ..mu..m) signals is used to optimize the amplitude of the resonant plasma wave. Preliminary measurements indicate effective acceleration of 1 GeV/m for a 1.5 mm long plasma.

• Research Organization: INRS-ENERGIE, P.O. 1020, Varennes, Qc., Canada, J0L-2P0
• OSTI ID: 5941120
• Report Number(s): CONF-8608123-
• Conference Information: Journal Name: AIP Conf. Proc.; (United States) Journal Volume: 156:1
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700108 -- Fusion Energy-- Plasma Research-- Wave Phenomena
ACCELERATORS
ALUMINIUM
BEAMS
BEAT WAVE ACCELERATORS
CARBON DIOXIDE LASERS
ELECTRON BEAMS
ELECTRON DENSITY
ELECTRON SOURCES
ELEMENTS
GAS LASERS
IONIZATION
LASER-PRODUCED PLASMA
LASERS
LEPTON BEAMS
METALS
PARTICLE BEAMS
PARTICLE SOURCES
PLASMA
RADIATION SOURCES