Experimental investigation of fast electron transport through K alpha imaging and spectroscopy in relativistic laser-solid interactions

Year: 2009

Authors: Köster P., Akli K., Batani D., Baton S., Evans R.G., Giulietti A., Giulietti D., Gizzi LA., Green J.S, Koenig M., Labate L., Morace A., Norreys P., Perez F., Waugh J., Woolsey N., Lancaster K.L.

Autors Affiliation: CNR, Intense Laser Irradiat Lab IPCF, I-56124 Pisa, Italy;
Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy;
Ohio State Univ, Dept Phys, Columbus, OH 43200 USA;
Univ Milano Bicocca, Dipartmento Fis G Occhialini, I-20126 Milan, Italy;
Ecole Polytech, CNRS, Lab Utilisat Laser Intenses, F-91128 Palaiseau, France;
Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW1 2BZ, England;
Rutherford Appleton Lab, Cent Laser Facil, Didcot OX11 OQX, Oxon England;
Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy ;
Univ York, Dept Phys, Heslington Y010 5DD, England

Abstract: We report on experimental fast electron transport studies performed in the relativistic laser intensity interaction regime. The investigation has been carried out in the long-pulse (0.6 ps) regime relevant for the fast ignitor scheme in the inertial confinement fusion concept.
Multilayer targets containing different materials were irradiated. Here we show the results concerning SiO2 or Al layers, respectively. The K alpha radiation from a Cu tracer layer on the target rear side was found to be enhanced by a factor of about 8 with the irradiation of SiO2 targets with respect to the Al targets. The possible origin of this observation is discussed.


Volume: 51 (1)      Pages from: 14007  to: 14007

KeyWords: X-ray-emission; plasma interactions; shell ionization; density targets; absorption
DOI: 10.1088/0741-3335/51/1/014007

Citations: 24
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