Temporal evolution of beam emittance from a field-emission electron gun

Journal Article · Tue Sep 01 00:00:00 EDT 1987 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.339634· OSTI ID:6322790

Bekefi, G; Hartemann, F; Kirkpatrick, D A

The temporal evolution of the beam emittance and beam brightness from a field-emission electron gun (1.3 MV, 0.5 kA, 30 ns) has been measured with nanosecond time resolution by using a novel C-hacekerenkov-electro-optic diagnostic. Observations show that guns provided with velvet-backed cathodes behave differently than, and are superior to, the more conventional graphite cathodes.

• Research Organization: Department of Physics and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
• OSTI ID: 6322790
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 62:5; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BEAM EMITTANCE
CATHODES
CHERENKOV RADIATION
DATA
ELECTRO-OPTICAL EFFECTS
ELECTRODES
ELECTROMAGNETIC RADIATION
ELECTRON GUNS
ELECTRON SOURCES
EMISSION
ENERGY RANGE
EXPERIMENTAL DATA
FIELD EMISSION
INFORMATION
NUMERICAL DATA
PARTICLE SOURCES
RADIATION SOURCES
RADIATIONS
RELATIVISTIC RANGE
RESOLUTION