Emittance growth and image formation in a nonuniform space-charge-dominated electron beam

An experiment was designed to check theoretical predictions of charge homogenization and emittance growth in nonuniform space-charge--dominated beams due to conversion of field energy into transverse kinetic energy. Five beamlets were masked out of a solid 5-keV electron beam and injected into a per...

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Veröffentlicht in:	Phys. Rev. Lett.; (United States) 1988-12, Vol.61 (26), p.2933-2936
Hauptverfasser:	REISER, M, CHANG, C. R, KEHNE, D, LOW, K, SHEA, T, RUDD, H, HABER, I
Format:	Artikel
Sprache:	eng
Schlagworte:	BEAM EMITTANCE BEAM-PLASMA SYSTEMS BEAMS Charged-particle beams CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CONVERSION Electromagnetism electron and ion optics ELECTRON BEAMS ENERGY CONVERSION ENERGY RANGE Exact sciences and technology Fundamental areas of phenomenology (including applications) KEV RANGE KEV RANGE 01-10 LEPTON BEAMS PARTICLE BEAMS 640301 > Atomic, Molecular & Chemical Physics-- Beams & their Reactions Physics Relativistic electron and positron beams SPACE CHARGE
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Beschreibung
Zusammenfassung:	An experiment was designed to check theoretical predictions of charge homogenization and emittance growth in nonuniform space-charge--dominated beams due to conversion of field energy into transverse kinetic energy. Five beamlets were masked out of a solid 5-keV electron beam and injected into a periodic solenoidal focusing channel. Phosphor screen images showed that the beamlets merged into a uniform density single beam. Experimental results on merging distance and emittance growth were compared with theory and simulation and good agreement was found.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/physrevlett.61.2933