Hysteresis of ruby fluorescent line by pressure and annealing effect |
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Authors: | Yuichi Nakamura Ikuya Fijishiro Kazunori Taniguchi |
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Institution: | Faculty of Engineering , Mie University, 1515 Kamihama-cho, Tsu , Mie, 514, Japan |
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Abstract: | Abstract Accuracy of hydrostatic pressure measurement in a diamond-anvil cell (DAC) depends on the reproducibility of ruby RI fluorescent measurement. The larger scatter in R, fluorescent wavelength shift than the reproducibility of spectroscopic measurement was observed among appropriately mirror-finished ruby plates before setting up in DAC. The characteristics of the scatter changed after loading DAC up to pressure over hydrostatic limit. They vanished by annealing the ruby plates. These phenomena are presumably due to the appearance and disappearance of the residual stress in the ruby crystal. Such hysteresis of ruby fluorescent wavelength shift by pressure and its annealing effect are discussed. |
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Keywords: | High pressure ruby fluorescence annealing hysteresis diamond-anvil cell residual stress pressure measurement |
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