Ion acceleration by plasma waves excited by a gradually accelerated electron beam

Journal Article · Mon May 01 04:00:00 EDT 1978 · Sov. J. Plasma Phys. (Engl. Transl.); (United States)

OSTI ID:6440517

Balmashnov, A A; Golovanivskii, K S; Punitkhavelu, A M

A study is made of the possibility of exciting a plasma wave having a controllable phase velocity and which is capable of trapping a substantial number of plasma ions and accelerating them. The principle underlying the method can be summarized as follows: A group of transverse-hot electrons is produced in the plasma by an external rf pump at the parametric electron cyclotron resonance, and these electrons are gradually accelerated by a longitudinal magnetic field. They form an electron beam with an increasing phase velocity in the plasma. This beam excites a plasma wave which traps a substantial fraction of the plasma ions in the initial stage of acceleration, since the wave phase velocity in this stage is low. After this initial stage, this wave accelerates the trapped ions. Experiments are carried out in an argon plasma with n=4 x 10/sup 9/ cm/sup -3/. The pumping is carried out at the TE/sub 011/ cylindrical standing mode with a frequency of 2375 MHz, which corresponds to the parametric electron cyclotron resonance at the fundamental mode ..omega..=2..omega../sub c/e. It is shown that a gradually accelerated electron beam with a current of 1.5 mA excites a drift wave with a longitudinal velocity up to 1 x 10/sup 7/ cm/sec. This wave produces an ion beam with an ion energy of 1 keV and a current of 0.23 mA in the plasma.

• Research Organization: Patrice Lumumba University of International Friendship
• OSTI ID: 6440517
• Journal Information: Sov. J. Plasma Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Plasma Phys. (Engl. Transl.); (United States) Vol. 4:3; ISSN SJPPD
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700104* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Experimental-- (-1987)
700108 -- Fusion Energy-- Plasma Research-- Wave Phenomena
ACCELERATION
ARGON
BEAM-PLASMA SYSTEMS
BEAMS
CHARGED PARTICLES
DRIFT INSTABILITY
ECR HEATING
ELECTRIC DISCHARGES
ELECTRON BEAMS
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXCITATION
HEATING
HIGH-FREQUENCY HEATING
INSTABILITY
ION BEAMS
IONS
LEPTON BEAMS
NONMETALS
PARTICLE BEAMS
PENNING DISCHARGES
PLASMA DRIFT
PLASMA HEATING
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
PLASMA WAVES
RARE GASES
TRAPPING