Directional Bremsstrahlung from a Ti Laser-Produced X-Ray Source at Relativistic Intensities in the 3-12 keV Range

Year: 2010

Authors: Zamponi F., Luebcke A., Kaempfer T., Uschmann I., Foerster E., Robinson A.P.L., Giulietti A., Koester P., Labate L., Levato T., Gizzi LA.

Autors Affiliation: Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany; Central Laser Facility, STFC Rutherford-Appleton Laboratory, Chilton, OX11 0QX, United Kingdom; ILIL, Istituto Nazionale di Ottica, UOS adriano Gozzini, CNR, Via G. Moruzzi 1, Pisa, Italy; INFN, Sezione di Pisa, Largo B. Pontecorvo 3, Pisa, Italy; Max-Born-Institut, Berlin, Germany; Laboratori Nazionali di Frascati, INFN, Frascati, Italy

Abstract: Front and rear side x-ray emission from thin titanium foils irradiated by ultraintense laser pulses at intensities up to approximate to 5 x 10(19) W/cm(2) was measured using a high-resolution imaging system. Significant differences in intensity, dimension, and spectrum between front and rear side emission intensity in the 3-12 keV photon energy range was found even for 5 mu m thin Ti foils. Simulations and analysis of space-resolved spectra explain this behavior in terms of directional bremsstrahlung emission from fast electrons generated during the interaction process.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 105 (8)      Pages from: 085001  to: 085001

More Information: We wish to acknowledge the JeTi laser staff, Laser-Lab Europe, and the DFG for the support. A. P. L. R. is grateful for computational resources provided by STFC\’s e-Science facility, and for the provision of the EPOCH code by CCPP (particularly to T. Arber and C. Brady). The ILIL team also acknowledges financial support by the MIUR-PRIN-2007 project \”Studio della generazione di elettroni veloci […]\” and by the HiPER Project.
KeyWords: electron-trasport; plasma; absorption
DOI: 10.1103/PhysRevLett.105.085001

ImpactFactor: 7.622
Citations: 12
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