Published June 13, 2007
| Version v1
Journal article
Polarized electron source operation at average currents of several milliamperes
Creators
- 1. Institut fuer Kernphysik der Universitaet Mainz, 55118 Mainz (Germany)
Description
The assumption of a constant charge per lifetime of NEA photocathodes was tested at polarized electron currents of several mA. Polarized electrons were produced from bulk GaAs photocathodes by laser illumination with a photon energy close to the band gap. We demonstrate that cathode heating, ion trapping and increased relative beam loss due to space charge effects may lead to reduction of charge lifetime. We also find that cathode lifetime increases by a factor four when we increase the photon energy to 2.3 eV
Additional details
Identifiers
- DOI
- 10.1063/1.2750946;
Publishing Information
- Journal Title
- AIP Conference Proceedings
- Journal Volume
- 915
- Journal Issue
- 1
- Journal Page Range
- p. 1019-1024
- ISSN
- 0094-243X
- CODEN
- APCPCS
Conference
- Title
- 17. international spin physics symposium
- Dates
- 2-7 Oct 2006
- Place
- Kyoto (Japan)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39076663
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; S43: PARTICLE ACCELERATORS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ELECTRIC CURRENTS; ELECTRON SOURCES; ELECTRONS; EV RANGE; GALLIUM ARSENIDES; IONS; LASER RADIATION; LIFETIME; OPERATION; PHOTOCATHODES; PHOTONS; POLARIZATION; SPACE CHARGE; TRAPPING
- Descriptors DEC
- ARSENIC COMPOUNDS; ARSENIDES; BOSONS; CATHODES; CHARGED PARTICLES; CURRENTS; ELECTRODES; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GALLIUM COMPOUNDS; LEPTONS; MASSLESS PARTICLES; PARTICLE SOURCES; PNICTIDES; RADIATION SOURCES; RADIATIONS
Optional Information
- Notes
- (c) 2007 American Institute of Physics