Optical-absorption edge of CsI up to 58 GPa
- 15 August 1984
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 30 (4), 2309-2311
- https://doi.org/10.1103/physrevb.30.2309
Abstract
The optical transmittancy of cesium iodide single crystals has been studied up to 58 GPa, using xenon as a pressure-transmitting medium. The shape and position of the absorption edge under pressure has been measured under controlled stress-homogeneity conditions. It is found to differ significantly from previous results obtained on highly strained powder samples. The data are analyzed in terms of band-toband transitions and show that band closing in cesium iodide is not to be expected below 90 GPa.Keywords
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