Journal
PHYSICAL REVIEW LETTERS
Volume 101, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.200403
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Prolific electron-positron pair production is possible at laser intensities approaching 10(24) W cm(-2) at a wavelength of 1 mu m. An analysis of electron trajectories and interactions at the nodes (B=0) of two counterpropagating, circularly polarized laser beams shows that a cascade of gamma rays and pairs develops. The geometry is generalized qualitatively to linear polarization and laser beams incident on a solid target.
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