| 摘要 |
A technique for accelerating charged particles using an intense traveling electromagnetic wave such as produced by appropriate wavelength lasers. Low energy electrons injected into the focal region of an intense, polarized laser beam are rapidly accelerated in the direction of the beam by the ponderomotive force of the radiation field. The particles reach maximum energy in a distance comparable to the Rayleigh range of a tightly focussed, visible wavelength, diffraction limited pulsed laser. At this point, a combination of induced transverse velocity drifts and/or the rapidly decreasing electric field strengths due to the expanding laser beam envelope cause the particles to enter a low radiation field region before significant deceleration can occur. The resulting device possesses unique advantages and properties not present in existing accelerators.
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