Abstract
The formation of colour centres was studied in ruby irradiated by X-rays containing 0·01–1·0% Cr. The absorption spectrum exhibits new bands at 450 and 380 mμ. It was found that the highest number of colour centres is formed at a concentration of 0·2% Cr. The nature of these centres is discussed on the basis of optical, thermoluminescent and phosphorescent measurements.
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Novotný, J., Spurný, Z. The effect of X-rays on ruby. Czech J Phys 16, 119–124 (1966). https://doi.org/10.1007/BF01689004
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DOI: https://doi.org/10.1007/BF01689004