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Phys Rev Lett. 2001 Mar 12;86(11):2317-20.

Mev X rays and photoneutrons from femtosecond laser-produced plasmas.

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1
Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität, Jena, Germany.

Abstract

We demonstrate a novel method to monitor the total angular distribution of the spectrum of hard x-ray emission from a plasma generated with femtosecond laser pulses with an intensity of 5 x 10(18) W/cm2 on a solid target. Measured and calculated angular distributions of x rays show a pronounced anisotropy for MeV photon energies. We complemented the spectral information by demonstrating a (gamma,n) nuclear reaction with a tabletop laser system.

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