Antiresonance Phenomena in the Absorption Spectra of Rare-Earth Ions in X-Irradiated Ca
- 25 August 1969
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 23 (8) , 405-407
- https://doi.org/10.1103/physrevlett.23.405
Abstract
Some absorption lines of rare-earth ions in calcium fluoride were found to be considerably affected by irradiation with x rays. These narrow lines, which appeared superimposed on a broad background of color-center absorption, were in some cases over 100 times stronger after irradiation and had strongly asymmetric line shapes, often resulting in an antiresonance dip. It is proposed that these effects are caused by interaction of the rare-earth ion and a neighboring color center.Keywords
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