PHOTOEMISSION FROM A LASER-DRIVEN STORAGE OXIDE CATHODE

Authors
ZHANG GM LIAO XH WU QD
Citation
Gm. Zhang et al., PHOTOEMISSION FROM A LASER-DRIVEN STORAGE OXIDE CATHODE, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 385(1), 1997, pp. 1-5
Citations number
20
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
385
Issue
1
Year of publication
1997
Pages
1 - 5
Database
ISI
SICI code
0168-9002(1997)385:1<1:PFALSO>2.0.ZU;2-Z
Abstract
For the purpose of a good electron source applied in the photo-injecto rs for free electron lasers (FELs), an investigation has been made on the photoemission from a type of storage oxide cathode, whose electric conductivity and mechanical strength have been improved appreciably c ompared to the traditional standard oxide-coated cathode. When driven by a pulsed picosecond YAG laser of wavelength 0.53 mu m, the cathode exhibits a quantum yield of the order of 10(-5). The reliability of th e cathode is also studied. The interpretation on the photoemission is discussed based on the possibility of the existence of barium ultrafin e particles embedded in BaO semiconductor.