Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1889208 | Radiation Measurements | 2007 | 4 Pages |
Abstract
Beryllium oxide (BeO) crystals were investigated by time-resolved low temperature VUV-spectroscopy at the SUPERLUMI station and BW3 beam line of HASYLAB (DESY, Hamburg). Photoluminescence spectra (3-10.5Â eV), luminescence decay kinetics upon selective photoexcitation, as well as luminescence excitation (50-650Â eV) and reflectivity (9-35Â eV) spectra were measured and analyzed for oriented BeO crystals. It was shown that study of oriented crystals makes the traditional time-resolved spectroscopy method essentially more informative. Formation of the self-trapped exciton excited states of different multiplicity was found to sensitively depend on excitation energy and mutual orientation of the crystal's C optical axis and electric vector E of exciting polarized synchrotron radiation.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
V. Ivanov, M. Kirm, V. Pustovarov, A. Kruzhalov,