High-energy electron beam production by femtosecond laser interactions with exploding-foil plasmas

Year: 2001

Authors: Giulietti D., Galimberti M., Giulietti A., Gizzi LA., Borghesi M., Balcou P., Rousse A., Rousseau JP.

Autors Affiliation: CNR, Ist Fis Atom & Mol, Intense Laser Irradiat Lab, Area Ric, I-56124 Pisa, Italy;
Univ Pisa, Dipartimento Fis, INFM, I-56100 Pisa, Italy

Abstract: The interaction of an ultraintense, 30-fs laser pulse with a preformed plasma was investigated as a method of producing a beam of high-energy electrons. We used thin foil targets that are exploded by the laser amplified spontaneous emission preceding the main pulse. Optical diagnostics show that the main pulse interacts with a plasma whose density is well below the critical density. By varying the foil thickness, we were able to obtain a substantial emission of electrons in a narrow cone along the laser direction with a typical energy well above the laser ponderomotive potential. These results are explained in terms of wake-field acceleration.


Volume: 64 (1 part 2)      Pages from: 015402  to: 015402

KeyWords: acceleration
DOI: 10.1103/PhysRevE.64.015402

Citations: 29
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