Using the PALS iodine laser system, Au ions with the charge state up to 58+ and with the kinetic energy as high as ~300 MeV were generated. The production of these ions was tested in dependence on the laser frequency (1, 3), on the irradiation/detection angles (0, 30), on the focus position with regard to the target surface, and on the target thickness (500m, 200m, 80m). A larger amount of the fastest ions was produced with 1 than with 3, the most of the fast ions were recorded in the direction ~10 from the target normal, the optimum focus position is in front of the target and should be set on with a precision of 50m. The forward emission is weaker than the backward one for both of the thinner targets (which burn through) at our experimental conditions.
Copyright 2009 Elsevier B.V., All rights reserved.
- Backward and forward ion emission
- High energy au-ions
- Highly charged au-ions
- Laser-produced plasma
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering