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arXiv · 1610.09545

Far-field constant-gradient laser accelerator of electrons in an ion channel

Vladimir Khudik·Xi Zhang·Gennady Shvets
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Abstract

We predict that electrons in an ion channel can gain ultra-relativistic energies by simultaneously interacting with a laser pulse and, counter-intuitively, with a decelerating electric field. The crucial role of the decelerating field is to maintain high-amplitude betatron oscillations, thereby enabling constant rate energy flow to the electrons via the direct laser acceleration mechanism. Multiple harmonics of the betatron motion can be employed. Injecting electrons into a decelerating phase of a laser wakefield accelerator is one practical implementation of the scheme.

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Vladimir Khudik, Xi Zhang, Gennady Shvets. 2016-10-29. Far-field constant-gradient laser accelerator of electrons in an ion channel. https://arxiv.org/abs/1610.09545

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