Interaction of high-power x rays with sapphire crystals and quartz based materials |
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Authors: | V I Baryshnikov T A Kolesnikova S V Dorokhov |
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Institution: | (1) Scientific Research Institute for Applied Physics, Irkutsk State University, 664003 Irkutsk, Russia |
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Abstract: | The interaction of high-power (1011 W/cm2) soft (1–3 keV) x-rays with inorganic oxides (Al2O3 and SiO2) is studied. It is found that when the wavelength of the x rays is comparable to the lattice constant of the crystal, besides
generation of a high concentration of hot electrons and holes, there is broadening of the 2 p O2−-subband in the upper valence band owing to the local action of the strong x-ray field on regular oxygen sites. As a consequence,
depending on the intensity of the x-ray pulses, a broadening of the fast (<1 ns) core-valence x-ray luminescence spectra is
observed.
Fiz. Tverd. Tela (St. Petersburg) 39, 286–289 (February 1997) |
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