Abstract

We have demonstrated triple-pulse lasing combined with an X-ray mirror with 4 pumping pulses in Ni-like Nd at 7.9 nm. Intense triple-pulse X-ray laser radiation has been generated with a double-curved-slab target, which was irradiated with laser pulses of quasi-traveling wave configuration, using cylindrical lens arrays for uniform pumping. An order of magnitude higher X-ray laser pulse energy was observed along the forward-traveling wave direction compared to the backward-traveling wave direction. Output energy in the forward direction was estimated to be ∼40 µJ.

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