Phys. Rev. Lett. 86, 2317–2320 (2001)MeV X Rays and Photoneutrons from Femtosecond Laser-Produced PlasmasReceived 17 July 2000; published in the issue dated 12 March 2001 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 5×1018 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 (γ,n) nuclear reaction with a tabletop laser system. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.86.2317
DOI:
10.1103/PhysRevLett.86.2317
PACS:
52.27.Ny, 52.38.-r, 52.70.La
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