Maximum voltage gradient, uniformity and brightness of dispenser cathodes
Conference
·
OSTI ID:6909830
Initial measurements of current uniformity and intrinsic cathode brightness are presented a 5.1 cm diameter osmium alloy coated dispenser cathode. The data are obtained with a planar diode driven with a 35ns Blumlein pulse line. Pepper pot images are observed with a fast phosphor and gated camera. The current density and beamlet divergence angle are uniform within +-10% and a brightness J = 1.6E10A/m/sup 2/rad/sup 2/ is observed at a current density j=44A/cm/sup 2/. 6 refs., 2 figs., 2 tabs.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6909830
- Report Number(s):
- UCRL-97723; CONF-880713-12; ON: DE88014804
- Resource Relation:
- Conference: 7. international conference on high-power particle beams, Karlsruhe, F.R. Germany, 4 Jul 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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