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Laser science

Even harder X-rays

With the laser just over half a century old, another dream of the pioneers of this light source has been fulfilled. An atomic X-ray laser with unprecedentedly high photon energy has been demonstrated. See Letter p.488

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Figure 1: Atomic X-ray lasing.


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Correspondence to Jon Marangos.

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Marangos, J. Even harder X-rays. Nature 481, 452–453 (2012).

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