Ultrahigh harmonics from laser-assisted ion-atom collisions

Details Ultrahigh harmonics from laser-assisted ion-atom collisions Ultrahigh harmonics from laser-assisted ion-atom collisions

2003-05-26

arxiv.org/abs/physics/0305110v1

Physics

Atomic Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.91.243901

We present a theoretical analysis of high-order harmonic generation from ion-atom collisions in the presence of linearly polarized intense laser pulses. Photons with frequencies significantly higher than in standard atomic high-harmonic generation are emitted. These harmonics are due to two different mechanisms: (i) collisional electron capture and subsequent laser-driven transfer of an electron between projectile and target atom; (ii) reflection of a laser-driven electron from the projectile leading to recombination at the parent atom.

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