Generation of High-Current Photoelectrons Using a Subpicosecond Ultraviolet Laser
- 1 February 1993
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 32 (2B) , L297
- https://doi.org/10.1143/jjap.32.l297
Abstract
Laser-induced photoelecrons produced using an ultrashort pulse laser and a metal cathode have been accelerated to relativistic energy. The pulse duration and the wavelength of the laser are 0.5 ps and 248 nm, respectively. The acceleration voltage is 0.61 MV. The current density at the cathode surface was estimated to be about 1 kA/cm2, which is about one hundred of times higher than the theoretically calculated value of the space-charge-limited current density given by the Langmuir equation. Theoretical analysis of the space-charge-limited current density for an ultrashort electron bunch was performed.Keywords
This publication has 6 references indexed in Scilit:
- Nanosecond laser-driven reflection high energy electron diffraction system providing digital imaging in real timeApplied Physics Letters, 1992
- Generation of relativistic photoelectrons induced by an ultraviolet laser and their propagation characteristics in a longitudinal guiding magnetic fieldJournal of Applied Physics, 1992
- Rf guns: bright injectors for FELNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1991
- Angular velocity spread of relativistic photoelectrons induced by excimer laser irradiationApplied Physics Letters, 1984
- Generation of relativistic photoelectrons induced by excimer laser irradiationApplied Physics Letters, 1984
- Influence of optical field emission on the nonlinear photoelectric effect induced by ultrashort laser pulsesPhysics Letters A, 1972