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abstract:
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A laser-pumped accelerator utilizing a resonant, periodic, dielectric-loaded structure is proposed. The electromagnetic fields due to a side-injected laser beam impinging on this structure are described in a two-dimensional standing-wave approximation, and analyzed in terms of their suitability for accelerating electrons to ultra-relativistic energies. The longitudinal dynamics of injected electrons in the capture phase of the motion are discussed, as are the first and second order transverse focusing effects inherent in this type of structure. Similarities and differences between this scheme, and conventional as well as advanced accelerators, and practical issues relevant to experimental realization of laser acceleration are examined. (20 References).
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