LuminescenceR-line spectrum of ruby crystals shocked to 125 kbar along the crystalcaxis
- 15 January 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 39 (2), 973-979
- https://doi.org/10.1103/physrevb.39.973
Abstract
The ruby luminescence R-line spectrum has been measured under shock wave, uniaxial strain compression along the crystal c axis. Because the compression is elastic for the stress range reported here, changes in the R-line spectrum are reversible upon unloading. The magnitude of the wavelength shift for the R lines under shock loading is comparable to that observed in hydrostatic loading, but there are measurable differences: the present data show a nonlinear change with density compression; the - splitting decreases with increasing compression. The shock data, despite the strongly nonhydrostatic state of stress in the ruby, show no broadening of the R lines. A discussion of the observed behavior, under uniaxial strain, in terms of the point-charge ligand-field model is presented.
Keywords
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