PHOTOEMISSION IN THE PICOSECOND REGIME FROM A COATED TRIOXIDE CATHODE

Authors
LEBLOND B RAJANOERA G
Citation
B. Leblond et G. Rajanoera, PHOTOEMISSION IN THE PICOSECOND REGIME FROM A COATED TRIOXIDE CATHODE, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 340(1), 1994, pp. 195-198
Citations number
7
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
340
Issue
1
Year of publication
1994
Pages
195 - 198
Database
ISI
SICI code
0168-9002(1994)340:1<195:PITPRF>2.0.ZU;2-B
Abstract
Studies of the properties of the standard thermionic cathodes used as photoemitters began at LAL (Orsay) with B cathodes and are continued h ere with trioxide cathodes BaO, CaO and SrO. A picosecond YAG laser de livering 35 ps pulses is used at the fundamental frequency and with ha rmonics up to the 4th, and a dc electric field is applied between the anode and the cathode. For homega3BAR = 3.51 eV and homega4BAR = 4.68 eV the quantum yield is eta greater-than-or-equal-to 1 X 10(-3). With these two wavelengths, particular phenomena, depending on the BaO prop erties, can increase the temporal width of the emitted current up to n anoseconds.