Optimization and control of bright, ultrafast laser driven X-ray sources

Year: 2007

Authors: Gizzi LA., Giulietti A., Giulietti D., Koester P., Labate L., Levato T., Zamponi F., Kampfer T., Uschmann., Forster E., Sauerbrey R.

Autors Affiliation: IPCF, CNR (Italy) and Istituto Nazionale di Fisica Nucleare (Italy)
IOQ Institut für Optik und Quantenelektronik (Germany)

Abstract: In this paper we describe recent studies on X-ray emission from ultra-fast laser interactions with solids. We describe the dedicated equipment including a powerful femtosecond, Titanium-Sapphire laser system and custom developed diagnostics for the characterization of both the laser performance and the X-ray emission. We show the experimental results obtained from irradiation of Aluminium and Titanium targets including X-ray yield and spectra obtained using single-photon counting and spectroscopy. We discuss correlation of X-ray emission with the measured properties of hot electrons emerging from the target rear side. In particular, forward accelerated fast electrons propagating through a Ti foil are found to be emitted in a cone perpendicular to the target. A comparison of the experimental findings with the results of a PIC simulation is also reported, aimed at identifying the physical processes responsible for the production of this forward propagating population of fast electrons. Finally, we show results of simple optical spectroscopy measurements of scattered light and we discuss the use of these results in view of optimization and control of this kind of X-ray Sources.


Volume: 6634      Pages from: 66341H  to: 66341H

More Information: This work was partially supported by the MIUR project Impianti innovativi multiscopo per la produzione di radiazione X e ultravioletta (L. 449/97) and by the INFN PLASMON-X project. We would like to thank A. Barbini, W.Baldeschi and M. Voliani for technical assistance.
KeyWords: laser-plasma interactions; X-ray emission; ultrafast
DOI: 10.1117/12.742103

Citations: 2
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