High-brightness, narrowband, and compact soft x-ray Cherenkov sources in the water window

Knulst, W.; van der Wiel, M.J.; Luiten, O.J.; Verhoeven, J.
November 2003
Applied Physics Letters;11/10/2003, Vol. 83 Issue 19, p4050
Academic Journal
Narrowband, soft x-ray Cherenkov radiation at energies of 453 and 512 eV has been generated by 10 MeV electrons in, respectively, titanium and vanadium foils. The measured spectral and angular distribution of the radiation, and the measured total yield (≈10[sup -4] photon per electron) are in agreement with theoretical predictions based on refractive index data. We show that the brightness that can be achieved using a small electron accelerator is sufficient for practical x-ray microscopy in the water-window spectral region. © 2003 American Institute of Physics.


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