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Researchers Inch Closer to X-Ray Wavelengths

Photonics Spectra
Mar 1998
Scientists have long sought to explore the structure of matter at the atomic and molecular level. To achieve this, they have been working toward developing a self-amplified spontaneous emission x-ray free-electron laser.
Recently, a team from the department of physics and astronomy at the University of California at Los Angeles have moved closer to reaching the x-ray wavelength region using this technique. The researchers reported large gain for amplified radiation at 16 µm and observed high-intensity fluctuations.
They concluded that there was agreement between the theory and the experimental data, leading them to believe that such a laser could extend to shorter wavelenghs and eventually reach the x-ray region.

The scientific observation of celestial radiation that has reached the vicinity of Earth, and the interpretation of these observations to determine the characteristics of the extraterrestrial bodies and phenomena that have emitted the radiation.
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