Phys. Rev. Lett. 96, 014802 (2006) [4 pages]Thomson-Backscattered X Rays From Laser-Accelerated ElectronsReceived 6 September 2005; published 10 January 2006 We present the first observation of Thomson-backscattered light from laser-accelerated electrons. In a compact, all-optical setup, the “photon collider,” a high-intensity laser pulse is focused into a pulsed He gas jet and accelerates electrons to relativistic energies. A counterpropagating laser probe pulse is scattered from these high-energy electrons, and the backscattered x-ray photons are spectrally analyzed. This experiment demonstrates a novel source of directed ultrashort x-ray pulses and additionally allows for time-resolved spectroscopy of the laser acceleration of electrons. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.014802
DOI:
10.1103/PhysRevLett.96.014802
PACS:
41.75.Jv, 52.27.Ny, 52.38.Hb, 52.38.Kd
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