Investigating the resonant two-photon ionization of helium

Using a new experimental method, physicists from the Max Planck Institute for Nuclear Physics in Heidelberg investigated the resonant two-photon ionization of helium with improved spectral resolution and angular resolution. ...

Hyperpolic shear polaritons in low-symmetry crystals

Scientists from the Fritz Haber Institute of the Max Planck Society, Vanderbilt University, City University of New York, University of Nebraska, and University of Iowa have just published new results on asymmetric light-matter ...

The paradox of a free-electron laser without the laser

A new way of producing coherent light in the ultra-violet spectral region, which points the way to developing brilliant table-top X-ray sources, has been produced in research led at the University of Strathclyde.

Electrons in quantum liquid gain energy from laser pulses

The absorption of energy from laser light by free electrons in a liquid has been demonstrated for the first time. Until now, this process was observed only in the gas phase. The findings, led by Graz University of Technology, ...

Mechanism behind XFEL-induced melting of diamond unveiled

The ultrafast melting of diamond under intense x-ray irradiation has been visualized for the first time by RIKEN researchers. This observation will help scientists improve experimental methods that use high-intensity x-ray ...

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