Relativistic electron-beam-focusing experiments employing axial loads

Journal Article · Tue Nov 01 04:00:00 EST 1977 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.323464· OSTI ID:5448551

Genuario, R D; Triebes, K; Spence, P; Kishi, H

The self-focusing of intense relativistic electron beams in vacuum diodes relies upon beam-anode interactions to govern the time required to pinch the beam. Experiments performed at various laboratories have yielded sweep-in velocities of approx.1--2 mm/nsec. These low velocities result in the loss of a large fraction of the energy of the REB outside the pinch region.. As a means of increasing the sweep-in velocity and also improving beam centering and reproducibility, experiments were performed utilizing axial loads, either resistively or inductively isolated from the main low-impedance cathode. These experiments were carried out on various high-power generators, and average sweep-in velocities of up to approx.6 mm/nsec have been recorded for modest amounts of current on axis (9 or approx. =10% of the generator current).

• Research Organization: Physics International Company, San Leandro, California 94577
• OSTI ID: 5448551
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 48:11; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700208* -- Fusion Power Plant Technology-- Inertial Confinement Technology
BEAM-PLASMA SYSTEMS
BEAMS
CONFINEMENT
ELECTRON BEAMS
ENERGY LOSSES
ENERGY RANGE
LEPTON BEAMS
NUCLEAR REACTIONS
NUCLEOSYNTHESIS
PARTICLE BEAMS
PHOTOGRAPHY
PINCH EFFECT
PLASMA CONFINEMENT
RELATIVISTIC RANGE
STREAK PHOTOGRAPHY
THERMONUCLEAR REACTIONS