Emittance measurements of space-charge-dominated electron beams
- 1 March 1986
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 57 (3) , 341-345
- https://doi.org/10.1063/1.1138942
Abstract
A diagnostic technique for measuring beam emittance is developed for electron beams with diverging envelopes under strong space-charge forces. Radial profiles of current density, local temperature, and divergence angle are measured by the slit–pinhole method for axisymmetric beams. The particle distribution function in transverse phase space is then constructed and the rms emittance is obtained by numerical integrations. A 5-kV, 200-mA, 3-μs, and 60-pps electron beam is used in the comparison between theory and this experimental diagnostic method.Keywords
This publication has 4 references indexed in Scilit:
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- RMS Envelope Equations with Space ChargeIEEE Transactions on Nuclear Science, 1971
- Possible Emittance Increase through Filamentation Due to Space Charge in Continuous BeamsIEEE Transactions on Nuclear Science, 1971
- Evaluation of particle beam phase space measurement techniquesNuclear Instruments and Methods, 1967